MCQ on Biology -1
1. Karyotaxonomy is a branch of classification, which is based on
(A) Number of mitochondria
(B) Bands found on chromosomes
(C) Number of ribosome
(D) Position of gene
2. In Honey bee metamorphosis is ………
(A) Ametabolous
(B) Holometabolous
(C) Hemimetabolous
(D) None of the above
3. A blue Andalusian fowl is the product of mating black fowl with white fowl. A cross of blue fowl with another blue fowl results in ………..
(A) 1 black : 2 blue : 1 white
(B) 1 blue : 2 black : 1 white
(C) 1 black : 2 white : 1 blue
(D) 2 black : 2 blue
4. Which of the following is a function of reverse transcriptase in retroviruses?
(A) It converts host cell RNA into viral DNA
(B) It uses viral RNA as a template for DNA synthesis.
(C) It translates viral RNA into proteins
(D) None of the above
5. Which one of the following is not true about deuterostomes?
(A) Cleavage is usually spiral.
(B) The mouth form a new from the surface ectoderm
(C) The mesothelium arises by enterocoel
(D) The blastopore typically becomes
6. ‘Gluconeogenesis’ means
(A) Formation of glucose from glycogen.
(B) Formation of glucose from substances other than carbohydrates
(C) Formation of glucose from starch
(D) Formation of glucose from fructose and glycogen
7. In Honey bee metamorphosis is :
(A) Ametabolous
(B) Holometabolous
(C) Hemimetabolous
(D) Paurometabolous
8. Match Column – I with Column – II and select the correct answer using answer codes given below
Column – I Column – II
(A) Statocyst (i) Nereis
(B) Viviparous (ii) Ctenodrilus
(C) Nuchal organs (iii)Pheretima
(D) Clitellum (iv) Arenicola
(A) A (i), B (ii), C (iv), D (iii)
(B) A (ii), B (iv), C (iii), D (i)
(C) A (iv), B (iii), C (i), D (ii)
(D) A (iii), B (iv), C (i), D (ii)
9. Cholesterol is required for the synthesis of ……….
(A) Insulin
(B) Vitamin D
(C) Vitamin B
(D) Estradiol
10. The haemoglobin of Invertebrate animals differ from that of vertebrate animals is in having
(A) more lysine
(B) less histidine
(C) less arginine
(D) less cystine
11. Which one of the following is not a modification of placoid scales?
(A) Bony box of Trunk fishes (Ostracion)
(B) Sting or barbs of sting ray
(C) Teeth on the rostrum of saw fish (Pristis)
(D) Fish teeth
12. Synsacrum of fowl from is made up of how many fused vertebra?
(A) 16
(B) 13
(C) 18
(D) 19
13. Select the group of fish/fishes which feeds voraciously on Mosquito larva
A. Trichogaster B. Panchax C. Gambusia
Correct option is
(A) A and C
(B) B and C
(C) A, B and C
(D) C only
14. Longest gestation period is found in
(A) Elephant
(B) Blue Whale
(C) Scoliodon
(D) Salamandra atra
15. Zoonosis is ……….
(A) Diseases of human that can be transmitted to animals.
(B) Diseases of animals that can be transmitted to humans.
(C) A group of gram +ve bacteria infecting animals.
(D) A group of gram –ve and +ve bacteria infecting animals.
16. Urinary bladder like structure is present in
(A) Pigeon
(B) Ostriches
(C) Penguins
(D) Cassowaries
17. A. They are entirely marine and are found in shallow water.
B. Spongin is lacking.
C. Cellular dermal epithelium is well marked.
Consider the following statements with reference to Hexactinellida
The correct statements/statement are/is
(A) Only A
(B) Only B
(C) Only C
(D) A, B and C
18. Which one of the following is a disease caused by viruses with DNA Genome?
(1) Poliomyelitis (2) AIDS (3) Rabies (4) Chicken Pox
(A) Only (1)
(B) Only (4)
(C) Only (2)
(D) Only (3)
19. The Ribosomes in human Mitochondria are of …………
(A) 60 S types
(B) 80 S types
(C) 70 S types
(D) 30 S types
20. After death, the muscles become stiff and do not relax. This condition is called “rigor mortis”. This is caused by decrease concentration of …….
(A) Actin
(B) ATP (adenosine triphosphate)
(C) Relaxin
(D) Myosine
21. Which one of the following is not correctly matched?
(A) Ephyra Larva – Aurelia
(B) Parenchymula larva – Porifera
(C) Cydippid larva – Ctenophora
(D) Rhabditiform larva – Wuchereria banchrofti
22. In Echinoderms, the endoskeleton is …….
(A) Mesodermal
(B) Endodermal
(C) Ectodermal
(D) Absent
23. Characters that distinguish arthropods from annelids and molluscans are
1. absence of trochophore larva.
2. an external skeleton made up of chitin.
3. distinct mandibles.
4. subdivision of the legs into movable segments.
(A) 2 and 4
(B) 1 and 2
(C) 3 and 4
(D) 4 and 1
24. Contraction of myofibrils in skeletal muscles occurs between
(A) ‘Z’ lines
(B) ‘I’ bands
(C) ‘A’ bands
(D) ‘H’ zones
25. The movement of Neutrophils into tissues is called as
(A) Diffusion
(B) Internalization
(C) Extravasation
(D) Phagocytosis
26. DNA and RNA may be easily distinguishable by
(A) Extraction of DNA by hot trichloro-acetic acid
(B) Estimation of rate of trypsin digestion
(C) ) Measurement of their ultra violet spectra
(D) Colour reaction for the specific
27. Painkiller ‘Nyloxin’ is prepared from the venom of
(A) Pit Viper
(B) Cobra
(C) Krait
(D) Hydrophis
28. By which species Human Insulin is commercially produced?
(A) Escherichia coli
(B) Clostridium
(C) Rhizobium
(D) Mycobacterium
29. Development of sporophyte from gametophyte without the intervention of gametes is known as
(A) Apospory
(B) Apogamy
(C) Xenia
(D) Apomixis
30. Neotype is validly designated when ……
(A) Syntype is not available
(B) Holotype is lost
(C) Isotype is available
(D) All the original material is lost
31. The primary acceptor of carbon di oxide in Hatch-Slack cycle is
(A) Oxalic acid
(B) Phosphoenol Pyruvic acid (PEP)
(C) Ribulose biphosphate
(D) Phosphoglyceric acid
32. Which of the following tissue is not present in angiosperms?
(A) Parenchyma
(B) Plectenchyma
(C) Sclerenchyma
(D) Aerenchyma
33.select the correct answer using the common name and their botanical name given below
(1) Mustard- Brassica juncea
(2) Groundnut- Arachis hypogea
(3) Pigeon pea-Cajanus cajan
(4) Gram -Cicer arietinum
(A) Option 1 and 2
(B) Option 2 and 3
(C) Option 3 and 4
(D) All are correct
34. In a mRNA the nucleotides are linked to one another by
(A) Hydrogen bonds
(B) Van-der-Waals forces
(C) Glycosidic bonds
(D) Phosphodiester bonds
35. Which one of the following pairs is not correctly matched?
(A) Vivipary – Halophytes
(B) Velamen – Epiphytes
(C) Sunken Stomata – Xerophytes
(D) Pneumatophores – Mesophytes
36. Gynobasic style is the characteristic feature of which family
(A) Lamiaceae family
(B) Fabaceae family
(C) Asteraceae family
(D) Apiaceae family
37. A nitrogen fixing prokaryote showing symbiotic association with Azolla belongs to the genus
(A) Rhizobium
(B) Azotobacter
(C) Anabaena
(D) Nostoc
38. Virus-free plants can be produced from virus injected parent plant by
(A) Stem tip culture
(B) Leaf explant culture
(C) Ovule culture
(D) None of the above
39. Morphologically, the spice-yielding part of turmeric plant is
(A) Root
(B) Rhizoid
(C) Rhizome
(D) Dried fruits
40. Elaters are absent in
(A) Marchantia
(B) Riccia
(C) Anthoceros
(D) Funaria
41. The taxonomic category “Class” is between
(A) Order and Family
(B) Phylum and order*
(C) Order and Genus
(D) Kingdom and Phylum
42. Select the correct answer
(1) Nucleolus- rRNA synthesis
(2) Spherosome- Lipid Storage
(3) Plasmodesmata-Transport of macromolecule
(4) Peroxisome- Glycolate metabolism
(A) Option 1 and 4
(B)Option 2 and 3
(C) Option 3 and 1
(D) All are correct*
43. select the correct answer
Column I Column II
- Reindeer moss (i) Lycopodium
- Club moss (ii) Equisetum
- Bog moss (iii) Cladonia
- Horse tail (iv) Sphagnum
(A) 1-(iii), 2- (i), 3- (iv), 4- (ii)
(B) 1- (ii), 2-(iii), 3- (i), 4- (iv)
(C) 1-(i), 2-(iv), 3-(iii), 4- (ii)
(D) 1-(iii), 2- (ii), 3-(iv), 4- (i)
44. The enzyme used in Polymerase Chain Reaction (PCR) is
(A) Taq Polymerase
(B) Ribonuclease
(C) RNA Polymerase
(D) Endonuclease
45. During protoplast isolation, the plant cell wall degrading enzymes used, belong to the class
(A) Peroxidases
(B) Lipases
(C) Cellulases
(D) Nucleases
46. Agar-agar’ is extracted from
(A) Argemone spp.
(B) Agaricus spp.
(C) Rhodophyceae members
(D) Phaeophyceae members
47. In a germinating maize seed the enzyme α-amylase is produced by
(A) Seed coat
(B) Coleorhiza
(C) Aleurone layer
(D) Coleoptile
48. Periderm includes
(A) Pith, Cortex, Cambium
(B) Phelloderm, Endodermis, Pericycle
(C) Phellogen, Phellem, Phelloderm
(D) Pith, Vascular bundles, Endodermis
49. Motor cells are present in the upper epidermis of leaves of many monocots to
(A) Increase the surface area of the leaf
(B) Store large amounts of water
(C) Check transpiration by reducing the surface area of the leaf
(D) Bear unicellular trichome
50. All fungi can be termed as
(A) Heterotrophs
(B) Autotrophs
(C) Saprophytes
(D) Parasites
51. An example of fibre obtained from stem of the plant is
(A) Kapok
(B) Cotton
(C) Coir
(D) Flax
52. The sporophyte is not free living but is dependent on gametophyte in the plant group
(A) Algae
(B) Bryophyte
(C) Pteridophyte
(D) Gymnosperms
53. In germinating oil seeds β-oxidation of free fatty acid takes place in
(A) Oleosomes
(B) Glyoxysomes
(C) Mitochondria
(D) Cytosol
54. Dormancy caused by seed coat impermeability to water and gases can be broken by
(A) Scarification
(B) Stratification
(C) Vernalization
(D) None of the above
55. A group of fungi with septate mycelium in which sexual reproduction is either lacking or is unknown are classified under ……….
(A) Deuteromycetes
(B) Oomycetes
(C) Phycomycetes
(D) Ascomycetes
56. Which of the following is not a polypeptide?
(A) RUBISCO
(B) Ribozyme
(C) Protease
(D) Nitrogenase
57. Of all the land plants, bryophytes alone have independent (A)……… and an attached dependent (B)………. .
(A) (a) Sporophyte; (b) Gametophyte
(B) (a) Rhizome; (b) Rhizoids
(C) (a) Gametophyte; (b) Sporophyte
(D) None of the above
58. Which of the following systems of plant classification is a natural system of classification?
(A) Engler and Prantl
(B) Hutchinson
(C) Rendle
(D) Bentham and Hooker
59. Which of the following is incorrect in reference to Bryophytes?
(A) Water is essential for fertilization
(B) Presence of archegonia
(C) Presence of motile sperms
(D) Presence of independent sporophyte
60. Pyrenoids are
(A) Starch surrounded by protein grains
(B) Protein surrounded by starch plates
(C) Protein surrounded by oil layer
(D) Oil droplet surrounded by starch grains
61. The flesh of pear, guava and sapota fruit is gritty because of the presence of
(A) Sclereids
(B) Amyloplast
(C) Sclerenchymatous fibres
(D) Collenchyma
62. Sida, a member of family Malvaceae does not exhibit this prominent trait
(A) Monoadelphous stamens
(B) Axile Placentation
(C) Presence of epicalyx
(D) Alternate stipulate leaves
63. Plants not differentiated into root, stem and leaves are grouped under
(A) Gymnosperms
(B) Phanerogams
(C) Thallophytes
(D) Cryptogams
64. 9 + 2 fibrillar arrangement is present in
(A) Eukaryotic flagella
(B) Bacterial flagella
(C) Basal granule
(D) Centriole
65. Synergids help in
(A) Entry of pollen tube
(B) Formation of endosperm
(C) Formation of embryo sac
(D) Providing nutrition to male gametes
66. An example of Archae bacteria is
(A) Thermus aquaticus
(B) Bacillus thuringiensis
(C) Vibrio cholerae
(D) Escherichia coli
67. The most abundant carbohydrate present in the biosphere out of the following, is
(A) Cellulose
(B) Rubisco
(C) Lignin
(D) Fructose
68. A bacterial cell divides once every minute. It takes one hour to fill a cup. How much time will it take to fill half the cup?
(A) 29 Minutes
(B) 59 Minutes
(C) 30 Minutes
(D) 40 Minutes
69. Heterospory is seen in
(A) Isoetes
(B) Lycopodium
(C) Equisetum
(D) Pteris
70. Red rust of tea is caused by
(A) Ustilago spp.
(B) Puccinia spp
(C) Cystocarpus spp.
(D) Cephaleuros spp
71. The cell wall component because of which class cynophyceae has been renamed as cyanobacteria is
(A) Gelatin
(B) Pectin
(C) Pseudopeptidoglycan
(D) Murein
72. Ethnobotany is
(A) Branch of botany that deals with Archaea
(B) Botany of plants present in various hot spots
(C) Branch of botany that deals with relationship between the tribal people and the plants
(D) Botany of lower plant groups
73. The most advanced order in gymnosperms is
(A) Cycadales
(B) Gnetales
(C) Coniferales
(D) Taxales
74. The most advanced order in gymnosperms is
(A) Cycadales
(B) Gnetales
(C) Coniferales
(D) Taxales
75. Select the living cells from the following using the codes given below
(A) Chlorenchyma (B) Collenchyma (C) Bast (D) Prosenchyma (E) Sieve elements
Codes :
(A) A, B and E
(B) A, B, D and E
(C) A and E
(D) A, B and D
76. Fusion of mature individuals which directly act as gametes is called
(A) Isogamy
(B) Anisogamy
(C) Apomixis
(D) Hologamy
77. Intine of pollen grain is made up of
(A) Cellulose and pectin
(B) Lipid and protein
(C) Pectin and lignin
(D) Lignin and lignans
78. Development of sporophyte from the gametophytic tissue without involving fusion of gametes is known as
(A) Apospory
(B) Apogamy
(C) Parthenocarpy
(D) Metaxenia
79. The difference between RNA and DNA is because of
(A) Sugar and base
(B) Sugar and phosphate
(C) Only sugar
(D) Base and phosphate
80. Bulliform cells are present in
(A) stomatal pits of succulent plants
(B) upper epidermis of some monocot leaves
(C) lower epidermis of some monocot leaves
(D) stem cortex of hydrophytes
81. Gene which is responsible for the synthesis of a polypeptide chain is called
(A) Structural gene
(B) Promotor gene
(C) Operator gene
(D) Regulator gene
82. To back cross an individual heterozygous for tallness (Tt), it will be crossed with the parent having genotype
(A) TT only
(B) tt only
(C) Tt
(D) Both TT & tt
83. Light intensity at which rate of photosynthesis will be equal to the rate of respiration is known as
(A) Climacteric
(B) Optimum point
(C) Compensation point
(D) Minimal effect
84. Which of the following is a non-proteinaceous biocatalyst?
(A) Virons
(B) Prions
(C) Viroids
(D) Ribozyme
85. Syncytial (Coenocytic) epidermis is present in
(A) Ascaris
(B) Musca
(C) Pheretima
(D) Starfish
86. Which dye is not used to stain chromosome?
(A) Feulgen
(B) Acetocarmine
(C) Safranin
(D) Haematoxylin
87. A sponge harmful to the oyster industry is
(A) Spongilla
(B) Cliona
(C) Hyalonema
(D) Euspongia
88. The first genome is thought to consist of
(A) DNA
(B) RNA
(C) Both DNA and RNA
(D) Protein
89. Which one of the following is not a gaseous biogeochemical cycle in ecosystem?
(A) Sulphur cycle
(B) Phosphorus cycle
(C) Nitrogen cycle
(D) Carbon cycle
90. A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of
(A) Ketones
(B) Fructose
(C) Glucose
(D) Fats
91. Which of the following groups is of deuterostomes?
(A) Annelida, Mollusca, Chordata
(B) Annelida, Arthropoda, Mollusca
(C) Echinodermata, Hemichordata, Chordata
(D) Arthropoda, Mollusca, Echinodermata
92. Light compound microscope with 15X eyepiece lens and 45X objective lens will have a magnification of
(A) 1000
(B) 2000
(C) 675
(D) 875
93. Golden Age of fishes is
(A) Coenozoic era
(B) Ordovician period
(C) Mesozoic era
(D) Devonian period
94. In one non-replicated chromosome, how many DNA molecules are present?
(A) Only two
(B) Only one
(C) Only half
(D) Only four
95. Cause of ‘Cri-du-chat’ syndrome is :
(A) Fertilization of an XX egg by a normal Y bearing sperm.
(B) Trisomy of chromosome 21
(C) Loss of half of the short arm of chromosome 5
(D) Loss of long arm of chromosome 5
96. Which of the following is a poisonous mammal?
(A) Male Guinea Pig
(B) Female Guinea Pig
(C) Male Ornithorhynchus
(D) Female Ornithorhynchus
97. Which of the following causes typhoid fever in human?
(A) Shigella
(B) Salmonella
(C) Toxoplasma
(D) Microfilaria
98. Coelom is a space between
(A) Splitted mesoderm
(B) Mesoderm and ectoderm
(C) Ectoderm and endoderm
(D) Splitted endoderm
99. Areolar connective tissue joins
(A) Fat body with muscles
(B) Integument with muscles
(C) Bones with bones
(D) Bones with muscles
100. The first step in biosynthesis of polypeptide is catalyzed by
(A) Terminal transferase
(B) Peptidyl transferase
(C) Initiation factor (IFs)
(D) Aminoacyl-tRNA synthetase
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