IAS Prelims: BOTANY-2002

1. Which one of the following statements is
correct?
a. Cyan bacteria are abundant in both
fresh and salt water
b. Some cyan bacteria have flagella and
chloroplasts
c. Gram positive bacteria have only lip
polysaccharides in their cell wall
d. Archaebacteria have walls which
contain only peptidoglycan
2. Among the following plants, the fibers of
which one has least amount of cellulose?
a. Cotton
b. Flax
c. Hemp
d. Jute
3. The egg secretes pherohormone in
a. Chara
b. Chlamydomonas
c. Fucus
d. Polysiphonia
4. Which one of the following statements is
correct?
a. Leaves of all conifers are perennial
b. All vascular plants have Sieve Tube
Members
c. The red and edible flesh of strawberry
is the carpel tissue
d. Chitin is formed by the polymerization
of amino sugars
5. According to histogen theory, the
meristematic zone responsible for the
development of pericucle is
a. Periblem
b. Plerome
c. Dermatogen
d. Calyptorogen
6. The floral formula
represents
a. Solanum nigrum
b. Hibiscus rosasinensis
c. Citrus aurantum
d. Brassicfa campestris
7. The water cavity in the xylem of maize
stem is
a. Schizogenously formed from
protoxylem
b. Lysigenously formed from protoxylem
c. Schizogenously formed from
metaxylern
d. Lysigneously formed from metaxylem
8. The foral diagram given below represents
a. Liliaceae (Allium cepa)
b. Lamiaceae (Labiatae) (Ocimum
basilicum)
c. Euphorbiaceae (Phyllanthus niruri)
d. Amaryllidaceae (Crinum asiaticum)
9. Consider the following statements:
1. Epidermis and cortex of monocot root
are similar to those of dicot root.
2. Hypodermis of dicot stem consists of
sclerenchymatous cells.
3. The cells of bundle sheath in maize
leaf serve as temporary storage cells.
4. The dicot leaf is hypostomatic.
Which of these statements are correct?
a. 1 and 2
b. 2, 3 and 4
c. 1, 3 and 4
d. 1, 2, 3 and 4
10. Which one of the following statements
regarding bryophytes is not correct?
a. All mosses arc oogamous
b. Liverworts are heterosporus
c. Hornwort chloroplasts have pyramids
d. Hornworts from symbiosis with
Nostoc
11. A nitrogen fixing prokaryote showing
symbiotic Asuncion with Azolla belongs
to the genus
A. Anabaena
B. Azotobacter
C. Nostoc
D. Rhizobium
12. Match List I with List 11 and select the
correct answer:
List I (Plants)
A. Acanthus
B. Capparis
C. Dendrobiunm
D. Monotropa
List II (Type)
1. Xerophyte
2. Saprophyte
3. Halophyte
4. Epiphyte
A B C D
a. 3 1 4 2
b. 4 2 3 1
c. 3 2 4 1
d. 4 1 3 2
13. Match List I with List II and select the
correct answer:
List I (Substance)
A. Cocaine
B. Proserpine
C. Ephedrine
D. Quinine
List II (Plant part as source)
1. Bark
2. Leaf
3. Root
4. Stem and leaf
A B C D
a. 1 3 4 2
b. 2 4 3 1
c. 1 4 3 2
d. 2 3 4 1
14. The glyoxysomes in a plant cell
a. Detoxify the hydrogen peroxide
produced in the cell
b. Store the waste products released in
the carbohydrate metabolism
c. Break down the fatty acids during the
respiration of lipid
d. Convert glycol ate into glycine
15. Which one of the following tissues is
concerned primarily with conduction of
nutrients in a moss capsule?
a. Hypophysis
b. Elaters
c. Capsule wall
d. Columella

16. Match List I with List II and select the
correct answer :
List I (Plants)
A. Psidium guava
B. Corchorus capsularis
C. Coriandrum sativum
D. Nerium indicum
List II (Families)
1. Apiaceae (Umbelliferae)
2. Apocynaceae
3. Myrtaceae
4. Tiliaceae
A B C D
a. 3 4 1 2
b. 1 2 3 4
c. 1 4 3 2
d. 3 2 1 4


17. Match List I with List II and select the
correct answer:
List (Enzymes)
A. Phosphogluco isomerase
B. Triose phosphate isomerase
C. Fructose diphosphate aldolase
D. Hexokinase
List II (Conversions)
1. Fructose →Glucose
2. Glucose →Glucose -6- Phosphate
3. Glucose -6 -phosphate → Fructose -6-
phosphate
4. Glyceraldehydes -3-phosphate →
Dihydroxy acetone phosphate
5. Fructose-1, 6 diphosphate →
Glyceraldehydes -3-phosphate
A B C D
a. 5 4 1 2
b. 3 4 5 2
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c. 5 2 1 4
d. 3 2 5 4
18. With reference to the water relations of
plants, consider the following statements :
1. The mechanical work done by a
chemical system during any change at
constant temperature is equal to the
decrease in its free energy
2. In the case of inhibition, as water
continues to move into the imbibing,
the water potential of the water in the
imbibing becomes less negative
3. Osmotic pressure is directly
proportional to the number of solute
molecules per solvent
Which of these statements are correct?
a. 1 and 2
b. 2 and 3
c. 1 and 3
d. 1, 2 and 3
19. Match List I (Plant by-products) with List
II (Examples of compounds) and select the
correct answer
List I
A. Alkaloid
B. Flavonoid
C. Terpenoid
D. Vitamin
List II
1. Anthocyanin
2. Natural rubber
3. Folic acid
4. Ephedrin
A B C D
a. 4 1 2 3
b. 3 2 1 4
c. 4 2 1 3
d. 3 1 2 4
20. Which one of the following statements is
not correct?
a. The seeds of some gymnosperms have
no endosperm
b. Air-current is the only pollinating,
agent in gymnosperms
c. In the lower gymnosperms, the, male
gametes are in the nature of ciliated
spermatids
d. Some gymnospemis have both
tracheids and vessels in their xylem
21. Match List I with List II and select the
correct answer:
List I (Spice/Condiment)
A. Asafoetida
B. Cinnamon
C. Saffron
D. Turmeric
List II (Family of the plant)
1. lridaceae
2. Lauraceae
3. Umbellifeme
4. Zingiberaceae
A B C D
a. 2 3 4 1
b. 3 2 1 4
c. 2 3 1 4
d. 3 2 4 1
22. Among the following which one is the
richest source of Vitamin C?
a. Citrullus vulgaris
b. Lycopersicum esculentum
c. Phyllanthus emblica
d. Pyrus malus
23. Consider the following statements:
1. Acetaldehyde is an electron acceptor
during respiration
2. In Citric Acid Cycle, pyruvate is
transported from cytosol to
mitochondrial matrix
3. The Pentose Phosphate Pathway
occurs in cytosol
Which of these statements are correct?
a. 1, 2 and 3
b. 1 and 2
c. 2 and 3
d. 1 and 3
24. Union between a large non-motile female
gamete and a small motile male gamete is
called
a. Anisogamy
b. Isogamy
c. Oogamy
d. Zoogamy
25. Consider the following classes of Fungi :
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1. Ascomycetes
2. Basidiomycetes
3. Deuteromycetes
4. Zygomycetes
The fungal elements of which of these
classes are involved in forming lichens?
a. 1 and 2
b. 2 and 3
c. 1 and 4
d. 3 and 4
26. Consider the following families:
1. Amaranthaceae
2. Cyperaceae
3. Euphorbiaceae
4. Nyctaginaceae
Which of these families have plants with
C4 metabolism of photosynthesis?
a. 1 and 3
b. 1, 2 and 4
c. 2, 3 and 4
d. 1, 2, 3 and 4
27. Protein synthesis in bacteria stops when an
antibiotic, puromycin, is added because
a. Puromycin resembles tyrosyl-t RNA
b. It binds at A’ binding site and
terminates the polypeplide chain
c. It binds to peptide with the C-terminus
of growing polypeptide resulting in
termination of polypeptide chain
d. Its peptidyl end resembles the tyrosyl-t
RNA and helps binding of the amino
acid tyrosine
28. Match List I (Haploid number of
chromosomes) with List II (Name of the
plant) and select the correct answer:
List I
A. 6
B. 8
C. 12
D. 24
List II
1. Allium cepa
2. Oriza sativa
3. Solanum tuberosum
4. Vicia faba
A B C D
a. 4 2 1 3
b. 3 2 1 4
c. 4 1 2 3
d. 3 1 2 4
29. Among the following substances, which
one has the highest Respiratory Quotient?
a. Glucose
b. Malic acid
c. Oxalic acid
d. Palmitic acid
30. During day time, CAM (Crassulacean acid
metabolizing) :plants procure CO2 for
photosynthesis from
a. Pyruvic acid
b. Oxaloacetic acid
c. Oxalic acid
d. Malic acid
31. Regarding the mineral nutrition of plants,
which one of the following statements is
correct?
a. The availability of iron to plants
decrease with the increase of acidity of
the soil
b. The presence of CO2 dissolved in the
soil water reduces the solubility of
carbonates of lime in it
c. Molybdenum is a constituent of nitrate
reductasesystem
d. Sulphur is a constituent of
phenylalanine
32. Which one of the following types of
organisms causes the disease Potato
Witches broom?
a. Virus
b. Myceplasma
c. Fungus
d. Bacteria
33. Which one of the following statements
regarding photosynthesis is not correct?
a. Compounds with large positive redox
potential tend to donate electrons
b. Chlorophyll a and chlorophyll b have
phytol tails which are hydrophobic
c. Cyclic electron transport permits the
production of extra ATP without the
synthesis of NADPH or the production
of free oxygen
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d. Crassulacean acid metabolism is
present in the plants of Cucurbitaceac
and Labiatae
34. 34. Which one of the following is the
correct order of retentive capacity of clay
micelle particles for cations in the soil?
a. H+> K+ > Ca++ > Mg++
b. K+ > H+ > Mg++ > Ca++
c. Mg++ > Ca++ > K+ > H+
d. H +Ca++ > Mg++ > K+
35. Consider the following statements:
1. In Pteridophytes, the phloem lacks
companion cells
2. The xylem lacks vessels in majority of
Pteridophytes
3. Heterosporous Pteridophytes have
inconspicuous gametophytes
4. Water is essential for fertilization in
Pteridophytes
Which of these statements are correct?
a. 1,2,3 and 4
b. 2,3 and 4
c. 1 and 3
d. 1,2 and 4
36. Which one of the following bacteria
reduces nitrate to gaseous nitrogen?
a. Azospirillum
b. Nitrosomonas
c. Nitrococcus
d. Pseudomonas
37. The class of seeds which must maintain a
relatively high moisture content in order to
remain viable are known as
a. Orthodox seeds
b. Recalcitrant seeds
c. labyrinth seeds
d. Ex- albumirious seeds
38. Which one of the following statements is
not correct regarding vivipary?
a. Seeds germinate within the fruit while
still attached to the mother plant
b. It usually occurs under highly saline
conditions
c. It occurs in the mangrove plants
d. It involves a dormancy period for the
seed
39. Which of the following cells divide to
form two unequal cells?
a. Microspore mother cell
b. Microspore
c. Megaspore mother cell
d. Megaspore
40. Consider the following fatty acids:
1. Linolenic acid
2. Oleic acid
3. Palmitic acid
4. Stearic acid
Which of these is/are unsaturated fatty
acids?
a. 1 only
b. 1 and 2
c. 3 and 4
d. 2,3 and 4
41. Which one of the following statements is
not correct regarding vegetative
propagation?
a. Vegetative propagation produces
clonal population
b. Micro propagation is the fastest
technique of vegetative propagation
c. Vegetative propagation can go on
round the year
d. Vegetative propagation helps to
eliminate the virus
42. In which one of the following plants is the
embryo sac devoid of the synergids?
a. Oenothera sp.
b. Opunitia sp.
c. Plumbago sp.
d. Najas sp.
43. Filiform apparatus is found in the
a. Egg
b. Suspensor
c. Endosperm
d. Synergids

44. Consider the following statements
regarding the pair growth substances:
1. Cytokines make dormant buds active
2. The richest concentrations of cytokines
generally occur in endosperm
3. Ethylene is involved in the formation
of parenchyma in submerged roots and
stems
4. Gibberellins are involved in the break
of seed dormancy
Which of these are correct?
a. 1,2,3 and 4
b. 2,3 and 4
c. 1 and 4
d. 1,2 and 3
45. Stigma is always rough and sticky in
a. Entomophilous flowers
b. Anemophilous flowers
c. Hydrophilous flowers
d. Zoophilous flowers



46. A male germ unit in Brassica sp.
comprises of
a. The entire pollen grain
b. One sperm and the vegetative nucleus
c. The two sperms
d. Both the sperms and the vegetative
nucleus
47. If more than one pollen tubes discharge
their contents inside an embryo sac and the
sperm fusing with the egg is derived from
one tube and the one fusing with the
secondary nucleus from another tube, it is
called
a. Heterofertilization
b. Polyspermy
c. Heterospermy
d. Polygamy
48. Heterospory and ligulate leaves are the
characteristic features of
a. Lycopodium
b. Equisetum
c. Selaginella
d. Adiantum
49. In a cross between a tetraptoid female
plant and a dip bid male plant of mulberry,
the endosperm would be
a. Hexaploid
b. Triploid
c. Tetrapolid
d. Pentapolid
50. In cirus, adventives embryos are derived
from
a. Integuments
b. Nucellus
c. Synergids
d. Zygotic embryo
51. Arabidopsis is a popular experimental
material to study the genetic control of
embryo development in higher plants
because of
a. Short life cycle
b. Smaller genome
c. Small size of plant
d. Amenability to tissue culture
52. Match list I with List II and select the
correct answer:
List I (Name of chemical substance)
A. Indoleacetic acid
B. α-naphthalene acetic acid
C. Indolepyruvic acid
D. Indolebutyric acid
List II (Chemical structure)
A B C D
a. 2 3 4 1
b. 1 4 3 2
c. 2 4 3 1
d. 1 3 4 2
53. The precursor of Serine and Cytokine is
a. Oxalocetate
b. 3-phosphoglycerate
c. Phosphoenolpyruvate
d. Erythrose-4-phosphate
54. In heterozygote reciprocal translocation, a
segment from one chromosome becomes
attached to a non-homologous
chromosome. Such chromosomal
aberration can be detected cytological in
the meiotic prophase-l in the form of a
a. Quadrivalent forming a cross
b. Bivalent forming a loop
c. Linear quadrivalent twice as thick as a
bivalent
d. Quadrivalent with one pair of
homologues shorter than the other
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55. The scutellum in a grass embryo is
equivalent of which organ in the embryos
of other monocots :
a. Cotyledon
b. Epicotyl
c. Plumular leaf
d. Radicle
56. 56. What will happen to transcription in
the absence of Sigma factor of RNA
polymerase?
a. Transcription will not take place
b. Transcription will initiate from the
initiation codon
c. Transcription will initiate from many
random sites
d. Transcription will initiate from the
other strand
57. Consider the following statements:
1. Copper is present in Cytochrome
oxidase
2. Pantothenic acid is the precursor of
Coenzyme A
3. Thiamine pyrophosphate is the
prosthetic group in decarboxylases
4. Zinc is present in RNA and DNA
polymerases
Which of these statements are correct?
a. 1 and 2
b. 2, 3 and 4
c. 1, 2, 3 and 4
d. 1, 3 and 4
58. In certain plants viable pollen is formed
but it cannot pollinate owing to nonrupture
of anther wall. This condition is
referred to as
a. Cytoplasm sterility
b. Functional sterility
c. Genic sterility
d. Genetic and cytoplasmic sterility
59. During the germination of pulse seeds, the
major food reserves are degraded by the
activity of
a. Amylase
b. Lipase
c. Protease
d. Cellulose
60. Commercial cork is obtained from
a. Luglans regia of which it is a dead
tissue with thickened walls with the
deposition of lignin
b. Betula alba of which it is a semi dead
tissues wih thickened walls and with
the deposition of suberin
c. Hevea brisiliensis of which it is
constituted by some living and more of
dead tissues with thickened walls and
with the deposition of cutin
d. Quercus suber of which it is a dead
tissue with thickened walls by the
deposition of suberin

61. Which one of the following complexes is
responsible for the cause of Tundu disease
in wheat?
a. Fungus-nematode
b. Nematode-bacterium
c. Fungus- bacterium
d. Virus- fungus
62. Match List I with List II and select the
correct answer:
List I (Fungal class)
A. Ascomycetes
B. Basidiomycetes
C. Deuteromycetes
D. Zygomycetes
List II (Organism)
1. Agaricus
2. Aspergillus
3. Rhizopus
4. Saccharomyces
A B C D
a. 4 2 1 3
b. 2 1 3 4
c. 4 1 2 3
d. 2 3 1 4
63. Match List I (Name of plant disease) with
List II (Name of Pathogen) and select the
correct answer:
List I
A. Angular leaf spot of cotton
B. Late blight of potato
C. Red rot of sugarcane
D. Tikka leaf spot of groundnut
List II
1. Phytophora infestans
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2. Colletotrichum falcatum
3. Cercospora personata
4. Xanthornonas malvacearum
A B C D
a. 3 1 4 2
b. 4 1 2 3
c. 3 4 2 1
d. 4 2 1 3
64. Leaf hopper which acts as a vector in. the
transmission of Tungro virus disease of
rice is
a. Sagatella orizicola
b. Inazuma dorsalis
c. Nilaparvata lugans
d. Nephotettix impicticeps
65. Carotenoids are
a. Glycoproteins
b. Hydrocarbons
c. Polyaccharids
d. Lipoproteins
66. Consider the following statements:
1. Orchids are monocotyledonous plants
2. Orchids have only ornamental value
3. All orchids are autotrophs
4. Some orchids are epiphytes
Which of these statements are correct?
a. 1 and 2
b. 2 and 3
c. 1 and 4
d. 3 and 4
67. Which one of the following pairs of
selectable marker genes and substrates
used to select transformed cells is not
correctly matched?
a. npt II .........Kanamycin
b. hpt ,............Hygromycin
c. dhfr .................Gentamycin
d. bar .................Bialaphos
68. Multiple alleles are present at
a. Different loci on the same
chromosome
b. Same locus on different chromosomes
c. Different loci on different
chromosomes
d. Same locus on homologous
chromosomes
69. Match List I with List II and select the
correct answer:
List I (Fruits)
A. Casheut
B. Coconut
C. Apple
D. Litchi
List II (Edible parts)
1. Thalamus
2. Cotyledons
3. Endosperm Aril
A B C D
a. 2 3 1 4
b. 1 3 4 2
c. 2 1 3 4
d. 3 4 1 2
70. In linkage studies of plants, for genetic
mapping, trihybrid test cross result is
considered rather than dihybrid test cross
result. Why?
a. The results are based on only four
classes of progeny obtained in dihybrid
cross
b. The percentage of genetic
recombination is always less between
two genes compared to three genes
c. Double crossover results cannot be
calculated in a dihybrid test cross
d. Equal frequency of progeny are
derived in a dihybrid test cross
71. Parthenocarpy has been introduced in eggplant
by inserting a bacterial gene
responsible for the synthesis of
a. Gibberellin
b. Cytokinin
c. Auxin
d. Abscis acid
72. Consider the following statements:
1. Ectocaipus has an alternation of
isomorphic generations
2. Fucus has no free living haploid
generation
3. All red algae are multicellular
organisms
4. Brown algae have a few unicellular
species
Which of these statements are correct?
9 of 13
a. 1, 2, 3 and 4
b. 2, 3 and 4
c. 1, 3 and 4
d. 1 and 2
73. Sympatric species are
a. Individuals occupying the same
geographical area but are not capable
of exchanging genes
b. Individuals occupying the same
geographical area and showing
identical phenotypes
c. Descendants of the same parents
distributed, in the same geographical
area
d. Individuals occupying the same
geographical area and capable of
exchanging genes
74. In the transcription process, a specific
factor called rho (p) factor is involved and
its function is to
a. Recognize specific signals on the DNA
template and cause RNA synthesis to
terminate
b. Initiate transcription of m-RNA on the
DNA template
c. Help binding of RNA Polymerase to
DNA template
d. Bind with the sigma factor and help to
start the transcription by RNA
Polymerase
75. Match List I (Type of rainfall) with List II
(Type of vegetation) and select the correct
answer:
List I
A. Moderate to heavy rainfall throughout
the year
B. Moderate to heavy rainfall occurring in
7 to 8 months in a year
C. Little summer precipitation but
sufficient rainfall in the winter
D. Sufficient rainfall in summer and little
in winter
List II
1. Scrub forests
2. Grasslands
3. Evergreen rain forests
4. Deciduous forests
A B C D
a. 2 4 3 1
b. 3 1 4 2
c. 2 3 1 4
d. 3 4 1 2

76. Which one of the following statements is

not correct?

a. The greenhouse gases trap only the

heal in infra-red radiation

b. Natural gas supplies five percent f

global energy needs

c. One molecule of CFC can trap as many

as 10,000 molecules of CO2

d. The atmospheric life time of CFCl3 is

estimated at 75 years

77. In a bacterium, the amount of Adenine was

found to be 18 percent. Suggest the

cytosine base composition from the

following:

a. 64%

b. 36%

c. 32%

d. 18%

78. Which one of the following is an example

of an enzyme group called transferees?

79. Which one of the following is an example

of an enzyme group called transferees?

a. Acetyl Co A synthetase

b. α-amylase ,k

c. Fructose biphosphate aldolase

d. 3- phosphoglycerate kinase

80. In view of the suicides committed by the

poor farmers towards raising the

commercial F1 hybrid seeds, a plant

breeder wishes to supply them the hybrid

seeds at a chapter cost. Which One of the

following type of genetic stocks can be

choose?

a. Inbred lines

b. Back-cross progeny

c. Male sterile lines

d. Pedigree lines

81. The gene promoter sequences, commonly

used in gene cloning experiments are

derived from

a. TMV (Tobacco Mosaic Virus)

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b. TSWV (Tomato Spotted Wilt Virus)

c. CMV (Cucumber Mosaic Virus)

d. CaMV (Cauliflower Mosaic Virus)

82. Which one of the following is a

hydrophyte?

a. Atistida

b. Certophyllum

c. Carthamus

d. Pedilanthus

83. A genetic engineer wishes to construct a

shuffle vector for his experiments. What

essential requirements should it possess to

integrate with the host systems?

a. Different origins of replication of DNA

b. Cos sites for incorporation of DNA

c. Polylinker sites for insertion of foreign

DNA

d. Restriction enzyme sites to generate

cohesive ends of DNA

84. An Albugo caused disease in which

pustules on the surface of ‘eaves, stem,

inflorescence and floral parts along with

various types of deformities of which,

hypertrophy is most pronounced, are the

characteristic symptoms of

a. Yellow stripe rust of wheat

b. White rust of mustard

c. Yellow ear rot and ear cockle of wheat

d. Udbatta disease of rice

85. The most effective technique to produce

virus-free plants from infected individuals

is

a. Shoot tip culture

b. Protoplast culture

c. Single cell culture

d. Nodal segment Culture

86. Which of the following combinations of

features is true for saprophytic selfincompatibility?

a. 3-cell pollen, dry stigma and rejection

reaction in the style

b. 2-celled pollen, short pollen viability,

rejection reaction on the stigma

c. 2-celled pollen, wet stigma, rejection

reaction in the style

d. Short pollen viability, dry stigma,

rejection reaction on the stigma

87. In Melandrium album, absence of which

segment of Y chromosome leads to

development of a female plant?

a. Suppressor region

b. Promoter region

c. Fertility region

d. Pairing region

88. Match List I with List II and select the

correct answer:

List I (Nature of codons)

A. Initiation codon

B. Termination codon

C. Codon for proline

D. Codon for lysine

List II (Different codons)

1. AAA

2. UUU

3. GGG

4. UAA

5. CCC

6. AUG

A B C D

a. 6 4 5 1

b. 5 4 3 2

c. 6 3 2 1

d. 3 2 5 6

89. Phototropic response of coleoptiles is

mediated through

a. Anthocyanin

b. Chlorophyll a

c. Cryptochrorne

d. Phytochrome

90. Which one of the following phenomena

leads to aneuploidy?

a. Improper division of centromere

b. Desynapsis

c. Asynapsis

d. Non-disjunction

91. The technique used to synthesize large
quantities of specific DNA fragment
without cloning it, is called
a. Gene replication
b. DNA amplification
c. Gene polymerization
d. DNA duplication
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92. Formation of propagules on floral
branches, either in to the flowers or in the
place of them, is called
a. Adventive embryony
b. Generative apospory
c. Somatic apospoty
d. Vegetative vivipary
93. Which one of the following figures is
correct in terms of ‘the approximate
number of species of Fungi described?
a. 6,890
b. 23,430
c. 46,980
d. 64,250
94. Consider. the following plants:
1. Castor bean
2. Pea
3. Maize
4. Soybean
In which of these plants is cotyledon the
principal reserve tissue of food?
a. 1 and 2
b. 2 and 4
c. 1 and 3
d. 3 and 4
95. Consider the names of the following pests:
1. Army worm of cotton
2. Colorado potato beetle
3. Cabbage lopper
4. Diamond-back moth of cabbage
Which of these are the target pests of
Bacillus thuringiensis?
a. 1, 2, 3 and 4
b. 2, 3 and 4
c. 1 and 2
d. 1, 3 and 4
96. The rate of change of species composition
among different stands of different forests
is expressed by
a. Alpha diversity
b. Beta diversity
c. Total variability
d. Variability
97. Match List 1 with List Il and select the
correct answer:
List I (Plants)
A. Adhtoda vasica
B. Artemisia maritima
C. Digitalis purpurea
D. Podophyllum emodi
List II (Medicinal value)
1. Antihelminthic
2. Ecpectorant
3. Treatment for Heart Disease
4. Purgative
A B C D
a. 2 1 3 4
b. 3 1 2 4
c. 2 4 3 1
d. 3 4 2 1
98. Electroporation is a technique commonly
used in
a. Tissue culture
b. Somatic hybridization
c. Radioimmuno assay
d. Electrophoresis
99. Which one of the following is not in the
commonly found vegetation of the desert
of Indus Plain?
a. Ceriops roxburghiana
b. Prosopis specigera
c. Salvadora oleoldes
d. Tamarix articulata
100. Consider the following fatty acids:
1. Stearic acid
2. Oleic acid
3. Linoleic acid
4. Linolenic acid
Which of these are found in plants?
a. 1 and 2
b. 1, 3 and 4
c. 2, 3 and 4
d. 1, 2, 3 and 4
101. With reference to the products of
microbial fermentation, which one of the
following pairs is correctly matched?
a. Lactic acid......... Rhizopus stolonifer
b. Vinegar ...............Acetobacter sp.
c. Vitamin B12........Streptomyces griseus
d. β - amylase ...........Saccharomyces sp.
102. Which one of the following pairs is not
correctly matched?
12 of 13
a. Vivipary .............Halophytes
b. Velamen ..........Epiphytes
c. Sunken stomata .......Xerophytes
d. Pneumatophores ...........Hydrophytes
103. Consider the following statements:
1. The genetic material of virus consists
of DNA or RNA, but never both
2. Viruses can be cultured on any
synthetic medium
3. Viruses lack enzymes necessary for the
generation of energy
4. Viruses are transmitted from one
organism to another by biological
vectors only
Which of these statements are correct?
a. 1, 2. 3 and 4
b. 2, 3 and 4
c. 1, 2 and 4
d. 1 and 3
104. Which one of the following plants has
ovary superior, monocarpellary and
unilocular with several ovules on marginal
placenta?
a. Anona squamosa
b. Datura stramonium
c. Pisum sativum
d. Ricinus comm unis
105. Assertion (A): The total dry mass of a
dark grown seedling is less than that of the
original seed.
Reason (R): When a seed germinates and
develops into a seedling in total darkness,
only fresh mass increases.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true

106. Assertion (A): In plants, site of action of
ethylene is close to its site of synthesis.
Reason (R): Ethylene is insufficiently
soluble in water to be transported in the
form of aqueous solution.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true



107. Assertion (A): Plants grow quicker during
day than during night.
Reason (R): The food which is essential
for growth is synthesized by the green
plants only in the presence of sunlight.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
108. Assertion (A): C14 isotope is more widely
used in biochemical studies than C11
isotope.
Reason (R): C14 isotope is radioactive and
found in nature.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
109. Assertion (A): In Zn deficient plants,
resupply of Zn increases auxin content.
Reason (R): Zn is essential for the
synthesis of auxin.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
110. Assertion (A): In summer months, most of
the plants show mid day closure of
stomata.
Reason (R): The rate of absorption of
water increases with the increase in
temperature.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
111. Assertion (A): If thylakoids isolated from
chloroplasts are exposed to light in the
presence of CO2 and H2O, hexose’s are not
formed.
Reason (R): Carbon assimilation is a dark
reaction and does not take place in light.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
13 of 13
c. A is true but R is false
d. A is false but R is true
112. Assertion (A): In woody plants growing
in temperate regions, the resumption of
cambial activity in the spring is related to
the new growth from buds.
Reason (R): The initial stimulation of
cambial activity is related to the formation
and distribution of growth hormones in the
spring.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
113. Assertion (A): Dormancy of seed is an
epigenetic trait.
Reason (R): Dormant seeds can be
induced to germinate by manipulating the
environmental conditions around the seed.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
114. Assertion (A): Alloploidy has led to the
evolution of many crop plants.
Reason (R): Alloploidy leads to the
pairing of homologous chromosomes
resulting in fertile hybrids.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
115. Assertion (A): In the study of DNA
analysis for biosystematics applications,
the chromatin values are estimated.
Reason (R): Morphologically similar
organisms appear to have similar amounts
of DNA in their genome.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
116. Assertion (A): The pollen wall proteins
are contributed by the two generations in
the life cycle of a flowering plant.
Reason (R): The exine proteins are of
saprophytic origin and the in tine proteins
are of gametophyte origin.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
117. Assertion (A): The stiffness and rigidity
of wood is due to the presence of cellulose,
hemicelluloses and lignin.
Reason (R): The degree of stiffness
depends upon the amount of cellulose in
the cell wall.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
118. Assertion (A): RuBP carboxyl’s is the
most abundant protein on earth.
Reason (R): RuBP carboxyl’s can
constitute up to 30 percent of the protein in
a leaf.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
119. Assertion (A): Triple dwarf mexican
wheat cultivar “Sonoar 64” was introduced
in India from outside.
Reason (R): Dwarfness increases the
productivity.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true
120. Assertion (A): Male trees of Ginkgo
biloba are not preferred in gardens.
Reason (R): Their seeds contain Butyric
Acid, which upon decomposition emits
foul smell like rancid butter.
a. Both A and R are true & R is the
correct explanation of A
b. Both A and R are true but R is NOT
the correct explanation of A
c. A is true but R is false
d. A is false but R is true