CUSAT CAT 2023 Question Paper Botany

BOTANY
(FINAL)

1. The transfer of genetic material from one bacterium to another through the mediation
of virus vector is termed as

(A) transduction
(B) conjugation
(C) transformation
(D) translation

2. Amitosis usually occurs in

(A) eukaryotic cells
(B) prokaryotic cells
(C) meristems
(D) microspore mother cells

3. Root cap in monocots is formed by

(A) dermatogen
(B) calyptrogen
(C) vascular cambium
(D) wound cambium

4. Placenta is attached to the developing seeds adjacent to

(A) testa
(B) hilum
(C) micropyle
(D) chalaza

5. In most of the green algae, pyrenoids are located in

(A) chloroplasts
(B) mitochondria
(C) cytosol
(D) nucleus

6. Hydroponics was first demonstrated by

(A) M. Calvin
(B) Julius Von Stachs
(C) Arnon
(D) Hoagland

7. It is known that an embryo may sometimes develop from any cell of embryo sac other
than the egg. This phenomenon is termed as

(A) apospory
(B) apogamy
(C) parthenogenesis
(D) parthenocarpy

8. Fungi producing eight spores in special sacs belong to the class

(A) Phycomycetes
(B) Ascomycetes
(C) Basidiomycetes
(D) Deuteromycetes

9. Seed setting takes place in ………… even in the absence of pollination

(A) Commelina
(B) Zostera
(C) Salvia
(D) Fig

10. A tobacco plant heterozygous for a recessive character is self-pollinated and 1200
seeds are subsequently germinated. How many seedlings would have the parental
genotype?

(A) 1250
(B) 600
(C) 300
(D) 2250

11. While isolating DNA from bacteria, which one among the following enzymes is NOT
used?

(A) Lysozyme
(B) Ribonuclease
(C) Deoxyribonuclease
(D) Protease

12. Growth of pollen tube towards embryo sac is

(A) Thermotactic
(B) Phototactic
(C) Chemotactic
(D) Thigmotactic

13. Which of the following is a source of single cell protein?

(A) Bacillus thuringiensis
(B) Azospirillum
(C) Saccharomyces cerevisiae
(D) Spirulina sp.

14. Totipotency is exhibited by

(A) Gymnosperms
(B) All plant cells
(C) Only bacterial cells
(D) All eukaryotic cells

15. The insecticidal protein synthesized by Bt cotton binds to the

(A) foregut epithelial cells
(B) midgut mesothelial cells
(C) midgut epithelial cells
(D) hindgut mesothelial cells

16. The term used to refer to the use of bio-resource(s) by MNC’s, corporate sector and
other organisations without proper authorisation from the countries and without a
clause for inbuilt compensatory payment is

(A) Bioprospecting
(B) Biopiracy
(C) Biofortification
(D) Bioinformatics

17. Global agreement to reduce Ozone Depletion in the Stratosphere (ODS) is

(A) Vienna convention
(B) Rio de Janeiro Conference
(C) Kyoto protocol
(D) Montreal protocol

18. Marginal placentation is generally found in the family

(A) Leguminosae
(B) Cucurbitaceae
(C) Malvaceae
(D) Brassicaceae

19. The function of glyoxysome is related to

(A) Protein metabolism
(B) Carbohydrate metabolism
(C) Fat metabolism
(D) Protein synthesis

20. Primers are

(A) Chemically synthesised oligonucleotides that are complementary to the regions
of DNA
(B) Chemically synthesised oligonucleotides that are not complementary to the
regions of DNA
(C) Chemically synthesised, autonomously replicating circular DNA molecules
(D) Specific sequences present on recombinant DNA

21. In pBR322, tetracycline resistance gene has recognition site for which of the
following restriction endonucleases?

(A) Hind III
(B) BamHI
(C) EcoRI
(D) PstI

22. The term 'systematics' refers to

(A) Identification and study of organ system
(B) Identification and preservation of plants and animals
(C) Diversity of organisms and their relationship
(D) Study of habitats of organisms and their classification

23. Coralloid roots of which one among the following gymnosperms have symbiotic
association with N2 – fixing cyanobacteria?

(A) Pinus
(B) Cedrus
(C) Cycas
(D) Ginkgo

24. During which phase of the cell cycle does DNA replication take place?

(A) G0
(B) G1
(C) S
(D) G2

25. Necrosis refers to

(A) inhibition of cell division
(B) delay in flowering
(C) death of tissues
(D) falling of leaves

26. Protozoans reproduce by binary fission. Starting with 1 protozoan, what will be the
number of protozoans in its population after six generations?

(A) 128
(B) 24
(C) 64
(D) 32

27. Canada balsam, a mounting agent used in the making of permanent slides, is obtained
from the species of

(A) Abies
(B) Cedrus
(C) Pinus
(D) Juniperus

28. Mass flow hypothesis was proposed by

(A) Swanson
(B) Buchman
(C) Kursanov
(D) Munch

29. Nicotinamide adenine dinucleotide (NAD) contains which one among the
following Vitamins?

(A) Thiamine
(B) Niacin
(C) Riboflavin
(D) Vitamin B

30. Bud dormancy is induced by

(A) IAA
(B) GA3
(C) ABA
(D) C2H4

31. Syngenesious condition of stamens is found in which one of the following families of
flowering plants?

(A) Asteraceae
(B) Liliaceae
(C) Cruciferae
(D) Malvaceae

32. The bulliform cells of leaves loose their turgidity during excessive

(A) assimilation
(B) transpiration
(C) photosynthesis
(D) respiration

33. Photochemical phase does not include

(A) Light absorption
(B) Water splitting and O2 release
(C) ATP and NADPH formation
(D) CO2 fixation

34. Who is the father of genetic engineering?

(A) Steward Linn
(B) Stanley Cohen
(C) Paul Berg
(D) Kary Mullis

35. In lac operon model, lactose function as

(A) Inducer that binds to operator gene
(B) Repressor that binds to operator gene
(C) Inducer that binds to repressor protein
(D) Co- repressor that binds to repressor protein

36. Flavr Savr tomato possesses increased

(A) productivity
(B) vigour
(C) shelf life
(D) flowering period

37. In India, tropical forests are found in

(A) Jammu and Kashmir
(B) Rajasthan
(C) Kerala and Assam
(D) New Delhi

38. UNEP stands for

(A) United Nations Ecotype Programme
(B) United Nations Ecological Programme
(C) United Nations Education Programme
(D) United Nations Environment Programme

39. Edaphic factor refers to

(A) water
(B) soil
(C) relative humidity
(D) altitude

40. When we homogenize any tissue in acidic medium, the acid soluble fraction
represents

(A) cytoplasm
(B) cell membrane
(C) nucleus
(D) mitochondria

41. Golden rice is yellow in colour due to the presence of

(A) Riboflavins
(B) Beta carotene
(C) Vitamin B1
(D) Complex genetic material

42. Which of the following is a triglyceride?

(A) Wax
(B) Phospholipid
(C) Oil
(D) Steroid

43. Most widely employed compound as a source of C2H4 is

(A) kinetin
(B) GA3
(C) IBA
(D) ethephon

44. Father of Indian embryology is

(A) P. Maheshwari
(B) M. S. Swaminathan
(C) Shipra Guha-Mukherjee
(D) J. P. Khurana

45. PEP is primary CO2 acceptor in

(A) C4 plants
(B) C3 plants
(C) C2 plants
(D) Hydrophytes

46. Which light is least effective in driving photosynthesis?

(A) Blue
(B) Green
(C) Red
(D) Violet

47. Best material to study meiosis is

(A) root tip
(B) ovary
(C) young anther
(D) pollen grain

48. Chromosome duplication without nuclear division refers to

(A) mitosis
(B) meiosis
(C) androgenesis
(D) endomitosis

49. If some solute is dissolved in pure water, its water potential

(A) remains same
(B) increases
(C) decreases
(D) first decreases then increases

50. The cofactor of nitrate reductase is

(A) Cu
(B) Zn
(C) Ca
(D) Mo

51. During complete metabolism of 1 molecule of glucose, the number of ATP formed is

(A) 2
(B) 12
(C) 36
(D) 44

52. How many fragments will be generated on the digestion of a closed circular DNA
molecule with a restriction enzyme having six recognition sites on the DNA?

(A) 5
(B) 7
(C) 6
(D) 9

53. The prokaryotic cell lacks

(A) Plasma membrane
(B) Cell wall
(C) Nuclear membrane
(D) DNA

54. Nucleolus was discovered by

(A) Robert brown
(B) Fontana
(C) Leeuwenhoek
(D) De Duve

55. In contrast to animal cells, the cytokinesis in plant cells involves the formation of a

(A) Clevage furrow
(B) Cellplate
(C) Nuclear envelop
(D) Mitotic spindle

56. The function of chromosomes in the transmission of hereditary traits was described by

(A) Flemming
(B) Waldeyer
(C) Miller
(D) Morgan

57. “A cell can arise only from a pre existing cell”- is the statement of

(A) Cell theory
(B) Cell linkage theory
(C) Law of heredity
(D) Cell wall theory

58. The movement of solutes against concentration gradient is called

(A) Active transport
(B) Endocytosis
(C) Exocytosis
(D) Osmosis

59. Exarch xylem is a feature of

(A) monocot stem
(B) monocot and dicot root
(C) monocot and dicot stem
(D) dicot leaf

60. Root apex differs from stem apex in having

(A) pleuron
(B) dermatogen
(C) periblem
(D) root cap

61. Cap cells are found in

(A) Oedogonium
(B) Cladophora
(C) Ficus
(D) Diatoms

62. Heterothallism in fungi was discovered by

(A) Watson and Crick
(B) Robert Hook
(C) Saccardo
(D) Blakeslee

63. The chloplast of Ulothrix sp. is

(A) Ribbon shaped
(B) Cup shaped
(C) Reticulate
(D) Fan shaped

64. Fungi which grow on dung are called

(A) Corticolous
(B) Coprophilous
(C) Saxicolous
(D) Xylophilous

65. Peristome teeth is the characteristic feature of the capsule in one among the following
bryophytes. Identify

(A) Riccia
(B) Marchantia
(C) Funaria
(D) Anthoceros

66. Cycas and Adiantum resemble each in having

(A) Seeds
(B) Cambium
(C) Vessels
(D) Motile sperms

67. Semiconservative mode of DNA replication was proved by

(A) Watson and Crick
(B) H. Khorana
(C) Lederberg
(D) Meselson and Stahl

68. The mechanism of DNA replication was originally characterized in

(A) Bacteria
(B) Algae
(C) Fungi
(D) Virus

69. Pathogenecity is the

(A) ability to cause disease
(B) degree of disease
(C) virulence
(D) quality of disease

70. Which organelle(s) require(s) intact membrane system for ATP synthesis?

(A) Chloroplast
(B) Mitochondria
(C) Chloroplast and mitochondria
(D) Endoplasmic reticulum

71. Which of the following is not an organic substance?

(A) Water
(B) Glucose
(C) Phospholipid
(D) DNA

72. Which of the following contains thymine?

(A) DNA
(B) rRNA
(C) tRNA
(D) mRNA

73. The replication is

(A) bidirectional
(B) unidirectional
(C) faster in eukaryotes
(D) slower in prokaryotes

74. What is a codon?

(A) A sequence of 3 deoxyribonucleotides
(B) A sequence of 3 ribonucleotides
(C) A unit of Mutation
(D) A sequence of 4 ribonucleotides

75. The spores of diatoms resulting from syngamy are called
(A) Autospore
(B) Auxospore
(C) Androspore
(D) Zygospore

76. Kelps are
(A) Fresh water algae
(B) Marine algae
(C) Fungi
(D) Lichens

77. The Protonema is a stage in the life cycle of

(A) Riccia
(B) Funaria
(C) Ginko
(D) Cycas

78. In Pteridophytes, reduction division occurs during the formation of

(A) spores
(B) gametes
(C) prothallus
(D) sex organs

79. Which one among the following is NOT a true fruit?

(A) Plum
(B) Dates
(C) Grape
(D) Apple

80. Besides carbohydrates, a major source of energy in human food is constituted by

(A) Vitamins
(B) Minerals
(C) Phytohormones
(D) Proteins

81. Cuscuta is a

(A) Partial root parasite
(B) Complete root parasite
(C) Partial stem parasite
(D) Complete stem parasite

82. Bio-diesel is mostly produced from the members of

(A) Liliaceae
(B) Malvaceae
(C) Myrtaceae
(D) Euphorbiaceae

83. Protein part of the enzyme is known as

(A) Holoenzyme
(B) Apoenzyme
(C) Isoenzyme
(D) Co-factor

84. Curcumin is isolated from

(A) garlic
(B) turmeric
(C) sunflower
(D) rose flower

85. Non-green heterotrophic organisms which were previously included under plant
kingdom are

(A) fungi
(B) algae
(C) ferns
(D) mosses

86. All the progeny obtained from a single plant by vegetative propagation are called

(A) clones
(B) pure line
(C) inbred line
(D) pedigree line

87. The dried flower buds are used as a spice in

(A) Saffron
(B) Cloves
(C) Cinnamon
(D) Cardamom

88. Lichens indicate pollution by

(A) O3
(B) SO2
(C) NO2
(D) CO

89. One among the following is NOT a phytohormone

(A) Acetic acid
(B) Auxins
(C) Gibberellins
(D) Ethylene

90. Cryopreservation is a technique used for

(A) crystallization of food
(B) food packaging
(C) germplasm conservation
(D) preservation of surplus vegetables

91. Greenhouse effect is related to

(A) increased growth of green algae
(B) global warming
(C) in-house vegetable cultivation
(D) development of terrace gardens

92. Most abundant water pollutant is

(A) Detergents
(B) Pesticides
(C) Industrial wastes
(D) Ammonia

93. Photosystem I and Photosystem II are found in

(A) Stroma and chloroplast
(B) Grana of chloroplast
(C) Matrix of mitochondria
(D) Inner membrane of mitochondria

94. Phytochrome is spectrally a chromoprotein with following absorption characteristics

(A) red/far-red
(B) blue/yellow-green
(C) brown/yellow
(D) green /yellow

95. The cell wall in majority of fungi is made of

(A) Chitin
(B) Cellulose
(C) Hemicellulose
(D) Lignin

96. National Park is an example of

(A) In vitro conservation
(B) Ex situ conservation
(C) In situ conservation
(D) Total loss of biodiversity

97. The term ‘New systematics’ was coined by

(A) Linnaeus
(B) Bentham and Hooker
(C) A. P. de Candolle
(D) Juliane Huxley

98. The study of a species in relation to its environment is known as

(A) Autecology
(B) Mutualism
(C) Altruism
(D) Tropism

99. Gram staining is performed based on the biochemical composition of one of the
following subcellular constituents

(A) bio membrane
(B) genome
(C) cell wall
(D) ribosomes

100. Which of the following is FALSE with respect to prokaryotes?

(A) They consist of bacteria and archaea
(B) Most are unicellular
(C) They have no cell nucleus
(D) Cell division occurs by mitosis and meiosis

101. Which stage is marked by terminalization of chiasmata?

(A) Zygotene
(B) Pachytene
(C) Diplotene
(D) Diakinesis

102. Synapsis occurs between

(A) two homologous chromosomes
(B) spindle fibre and centromere
(C) nucleus and ribosomes
(D) mRNA and ribosomes

103. Sex determination was first studied in

(A) Mirabilis
(B) Melandrium
(C) Datura
(D) Rumex

104. Pseudogenes are

(A) non-functional
(B) non-existent
(C) existent in plants only
(D) cannot be sequenced

105. Polyploidy is induced by

(A) irradiation
(B) colchicine
(C) mutagenic chemicals
(D) C2H4

106. What is a nucleoside?

(A) Pyramidine + purine + phosphate
(B) Purine + sugar + phosphate
(C) Purine/ Pyrimidine + phosphate
(D) Purine/ Pyrimidine + Sugar

107. Plant development is influenced by

(A) quality of light only
(B) quality and quantity of light
(C) quality and duration of light
(D) quality, quantity, and duration of light

108. Primary phloem develops from

(A) lateral meristem
(B) protoderm
(C) extrastelar cambium
(D) provascular tissue

109. Plants growing under very dry conditions are known as

(A) xerophytes
(B) mesophytes
(C) lithophytes
(D) hydrophytes

110. Monocot root differs from dicot root in having

(A) open vascular bundles
(B) scattered vascular bundles
(C) well-developed pith
(D) radially arranged vascular bundles

111. Which one among the following is a hereditary material in higher organisms and
contains the genetic information which is passed on from one generation to another?

(A) RNA
(B) DNA
(C) mRNA
(D) sRNA

112. Who discovered the nucleus?

(A) Albert Einstein
(B) Isaac Newton
(C) Robert Brown
(D) Robert Hooke

113. The term ethnobotany was coined by

(A) Sir Alexander Fleming
(B) John W. Harshberger
(C) C.J. Alexopoulos
(D) J.W Webster

114. The study of medicinal plants is known as

(A) pharmabryology
(B) pharmamycology
(C) pharmacology
(D) pharmacognosy

115. Pods as fruits are the characteristic feature of one among the following families.
Identify

(A) Solanaceae
(B) Rosaceae
(C) Poaceae
(D) Fabaceae

116. In higher plants, root cap functions in the perception of gravity due to

(A) mucilage
(B) nitrifying bacteria
(C) amyloplasts
(D) cell wall

117. A food chain describes the pathway of

(A) transformation
(B) energy flow
(C) consumption
(D) regeneration

118. Pseudomonas and Clostridium perform

(A) evaporation
(B) nitrification
(C) denitrification
(D) photorespiration

119. The culture of plant cells in liquid-agitated medium is called

(A) hydroponics
(B) mericloning
(C) micropropagation
(D) suspension culture

120. Plants adapted to low light intensity generally have

(A) extended root system
(B) CAM pathway of photosynthesis
(C) larger size of photosynthetic unit
(D) leaves modified to spines

121. Photoperiodism was discovered by

(A) Dutrochet and Overbeek
(B) Bose and Blackman
(C) Went and Paal
(D) Garner and Allard

122. In Gymnosperms, the female gametophyte develops from the

(A) nucellus cells
(B) haploid megaspore mother cell
(C) haploid megaspore
(D) diploid megaspore

123. The enzyme responsible for the reduction of nitrogen into ammonia during biological
nitrogen fixation is

(A) nitrogenase
(B) nitrate reductase
(C) dinitrogenase
(D) hydrogenase

124. Binary fission in bacteria involves all of the following except

(A) DNA duplication
(B) spindle formation
(C) cell elongation
(D) cytokinesis

125. Mendel emasculated garden pea plants during his experiments on heredity.
Emasculation is the

(A) removal of flower buds
(B) removal of anthers before dehiscence
(C) removal of carpels before dehiscence
(D) removal of mature flowers

126. Agrobacterium-based gene transfer is efficient

(A) only with dicots
(B) only with monocots
(C) with both monocots and dicots
(D) with gymnosperms

127. The process by which pollen tube enters the ovary through integument is called

(A) porogamy
(B) chalazogamy
(C) mesogamy
(D) isogamy

128. cDNA is synthesized from

(A) protein chain
(B) tRNA
(C) mRNA
(D) dsDNA

129. The first green plants and fungi appeared on land during the period of

(A) ediacaran
(B) devonian
(C) orosirian
(D) ordovician

130. Mycoplasmas are different from other prokaryotes in the

(A) presence of chitin in cell wall
(B) absence of the cell wall
(C) presence of murein in cell wall
(D) presence of proteins in cell wall

131. Fruits in the members of Solanaceae family are

(A) Capsule or berry
(B) Pod
(C) Drupe
(D) Siliqua

132. The small outgrowth on the adaxial surface of leaf at the junction with the leaf sheath
in grasses is called

(A) Tapetum
(B) Gemmae
(C) Ligule
(D) Sori

133. Protective covering over the radicle formed during seed germination is

(A) Suspensor
(B) Epithelium
(C) Coleorhiza
(D) Coleoptile

134. Mushrooms are a good source of

(A) lipids
(B) monosaccharides
(C) protein
(D) disaccharide

135. Who amongst the following is regarded as "Father of Indian Bryology''?

(A) K.C. Mehta
(B) D.D. Pant
(C) S.R. Kashyap
(D) P.N. Mehra

136. The largest bryophyte is

(A) Funaria
(B) Marchantia
(C) Megaceros
(D) Dawsonia

137. Who amongst the following is regarded as “Father of Indian Lichenology”?

(A) D. D. Awasthi
(B) D. Upreti
(C) Sajeeva Nayaka
(D) Gaurav acharya

138. Usnea is a ………… type of lichen

(A) foliose
(B) crustose
(C) filamentous
(D) fruticose

139. In lichens, sexual reproduction is carried out by

(A) algae
(B) fungi
(C) both algae and fungi
(D) bryophytes

140. A characteristic feature of the lysosome is that it has

(A) lower pH than the cytoplasm
(B) reduced hydrolase activity
(C) genetic material
(D) ribosomes

141. Which one among the following pairs do not produce seeds?
(A) Fern and Funaria
(B) Ficus and Chlamydomonas
(C) Punica and Pinus
(D) Funaria and Ficus

142. Ergot is obtained from

(A) Rhizopus
(B) Claviceps
(C) Albugo
(D) Phytomonas

143. The National Herbarium of India is at

(A) Bombay
(B) Kolkata
(C) Chennai
(D) New Delhi

144. The attraction between water molecules is called

(A) Cohesion
(B) Osmosis
(C) Adhesion
(D) Surface Tension

145. The initial CO2 acceptor in CAM plants is

(A) RuBp
(B) PEP
(C) IAA
(D) Pyruvate

146. The optimum pH for plant tissue culture medium is

(A) 7.5
(B) 8
(C) 5.7
(D) 8.5

147. Micropropagation involves culture of

(A) small explants used for vegetative multiplication of plants
(B) microbes used for vegetative multiplication of plants
(C) microspores used for vegetative multiplication of plants
(D) megaspores and microspores used for non – vegetative multiplication of plants

148. Preserved embryoids are termed as

(A) Synthetic seeds
(B) Semi-synthetic seeds
(C) Natural seeds
(D) Fermented seeds

149. Solidifying agent employed in plant tissue culture media is

(A) agar
(B) EDTA
(C) Cobaltous chloride
(D) pectin

150. The function of the centrosome is related to

(A) protein synthesis
(B) osmoregulation
(C) secretion
(D) formation of spindle fibres

FINAL ANSWER KEY
Subject Name: BOTANY

SI No. Key SI No. Key SI No. Key SI No. Key SI No. Key
1 A 31 A 61 A 91 B 121 D
2 B 32 B 62 D 92 C 122 C
3 B 33 D 63 A 93 B 123 A
4 B 34 C 64 B 94 A 124 B
5 A 35 C 65 C 95 A 125 B
6 B 36 C 66 D 96 C 126 A
7 B 37 C 67 A 97 D 127 C
8 B 38 D 68 A 98 A 128 C
9 A 39 B 69 A 99 C 129 D
10 B 40 A 70 C 100 D 130 B
11 C 41 B 71 A 101 D 131 A
12 C 42 C 72 A 102 A 132 C
13 D 43 D 73 A 103 B 133 C
14 B 44 A 74 B 104 A 134 C
15 C 45 A 75 B 105 B 135 C
16 B 46 B 76 B 106 D 136 D
17 D 47 C 77 B 107 D 137 A
18 A 48 D 78 A 108 D 138 D
19 C 49 C 79 D 109 A 139 B
20 A 50 C 80 C 110 C 140 A
21 B 51 C 81 D 111 B 141 A
22 C 52 C 82 D 112 C 142 B
23 C 53 C 83 B 113 B 143 B
24 C 54 B 84 B 114 D 144 C
25 C 55 B 85 A 115 D 145 B
26 C 56 A 86 A 116 C 146 C
27 A 57 A 87 B 117 B 147 A
28 D 58 A 88 B 118 C 148 A
29 B 59 B 89 A 119 D 149 A
30 C 60 D 90 C 120 C 150 D