CUET 2024 Biology MCQs for Practice

Biology MCQ Question Answers for CUET 2024

Biology MCQs – Practice the Biology MCQs suitable for various Entrance Exams including CUET. Learn and practice Biology questions and answers. Biology MCQ questions are very helpful for various competitive exams. CUET is a Common University Entrance Test that is now mandatory to take admission to Central Universities in India. Biology MCQ questions are based on the latest CUET 2024 exam pattern and other entrance exams, so that you can have a fair idea about exam trends that will be followed for various entrance exams.

1. Red rust of tea is caused by

a.Pteris

b.Puccinia

c.Oedogonium

d.Cephaleuros

2. The best indicator of SO2 pollution is

a.Fungus

b.Ferns

c.Lichens

d.Algae

3. Which of the following is not a viral disease of man?

a.Small pox

b.Whooping cough

c.Influenza

d.Rabies

4. What is monothecous stamen?

a.It is a stamen with no lobes

b.It is a stamen with one lobe

c.It is a sterile stamen

d.It is a stamen with many lobes

5. Failure of descending testis into the scrotum is known as

a.castration

b.paedogenes

c.impotency

d.cryptorchidism

6. Chlorophyll contains

a.K

b.Mn

c.Mg

d.Fe

7. The locomotor organs of Echinoderms is called

a.setae

b.tube feet

c.parapodia

d.pseudopodia

8. A mammals which never drinks water is

a.spiny ant eater

b.shrew

c.kangaroo rat

d.kangaroo

9. Groundnut is

a.Cannabis sativa

b.Arachis hypogaea

c.Psidium guajava

d.Oryza sativa

10. Lateral line system found in fishes has been lost in Amphibia because of

a.change over to herbivorous feeding

b.evolution of terrestrial habit

c.development of sturdy eggs

d.occurrence of metamoophosis on amphibian

11. Which is lacking in the urogenital system of birds?

a.A pair of ovaries and oviducts

b.A pair of large kidneys

c.Cloaca

d.A pair of testes

12. The respiratory organs in a freshwater mussel are

a.gills

b.book lungs

c.respiratory siphons

d.pulmonary sacs

13. The largest ovule in plant kingdom is seen is

a.None of these

b.Both A and B

c.Cycas circinalis

d.Cycas revolute

14. The locomotion of snake is helped by

a.reduced ribs

b.ribs only

c.ribs and reduced limbs

d.reduced limbs

15. Parachute mechanism of fruit and seed dispersal is due to structure called

a.bracts

b.pappus

c.hooks

d.corolla

16. The earliest ancestor of horse from early Eocene period is

a.pliohippus

b.merychippus

c.miobibbus

d.eohippus

17. The function of cristae in a mitochondrion is

a.carbon assimilation

b.elimination of Carbon Dioxide

c.electron transport and ATP synthesis

d.intake of Oxygen

18. The sequence of ear ossicles starting from the eardrum is

a.malleus, stapes, incus

b.malleus, incus, stapes

c.incus, stapes, malleus

d.stapes, incus, malleus

19. Sea hare is the common name of

a.Doris

b.Octopus

c.Aplysia

d.Sepia

20. Adams apple in man is

a.thyroid cartilage of larynx

b.cartilage of hyoid apparatus

c.epiglottis

d.cartilages of the trachea

21. Flame cells are the excretory organs of animals belonging the phylum

a.protozoa

b.porifera

c.platyhelminthes

d.coelenterate

22. A posterior pituitary hormone released during parturition is

a.ICSH

b.Oxytocin

c.ACTH

d.Vasopressin

23. Alternation of generations is otherwise known as

a.Dimorphism

b.Biogenesis

c.Epigenesis

d.Metagenesis

24. A sucker fish (Remora) attached to the body of shark would exemplify

a.mutualism

b.cooperation

c.commensalism

d.parasitism

25. Sequence of nucleotides in a DNA strand is CAT TAG CAT CAT GAC, what will be the base sequence in complementary strand of RNA?

a.GTA ATC GAT GTA CTA

b.TAG ATG ATG GUA CUG

c.GUA AUC GUA GUA CUG

d.GTA ATG GTA GAT CTA

26. In rabbit, the danger signal is given by

a.fore limbs

b.external ear

c.sound

d.tail

27. Fat soluble vitamins are

a.B, C and D

b.E, D and B

c.A, D and E

d.A, B and C

28. The leaf lamina are generally reduced in

a.epiphytes

b.mesophytes

c.xerophytes

d.hydrophytes

29. Colour blidness is caused due to

a.deficiency of vitamin C

b.absence of visual purple in retina

c.sex-linked abnormality

d.absence of rods in retina

30. The pair of fins found near the operculum in bony fishes is known as

a.anterior fins

b.pectoral fins

c.ray fins

d.paired fins

31. Sponges belong to the phylum

a.coelenterate

b.porifera

c.mastigophora

d.sporozoa

32. Islets of Langerhans secrete

a.glucagons

b.none of these

c.insulin

d.enzymes

33. The first invertebrates to develop a true nervous system are

a.sponges

b.annelids

c.coelenterates

d.arthropods

34. Androgens are secreted from

a.Testis and adrenal cortex

b.Leydig cells and placenta

c.Leydig cels and adrenal cortex

d.Adenohypophysis and tesis

35. Nematocysts of Hydra are important for

a.paralysing prey

b.testing the water

c.testing the food

d.cataching prey

36. Oil in the skin is secreted by

a.mucous glands

b.sebaceous glands

c.sweat glands

d.hair follicles

37. Sebaceous glands are found in

a.epithelium of intestine of frog

b.dermis of skin of mammals

c.epithelium of stomach of frog

d.epidermis of skin of mammals

38. The basic taxonomic unit upon which the systems of classification are constructed is

a.species

b.family

c.class

d.order

39. The deficiency of magnesium results in

a.none of these

b.wilting of plants

c.interveinal chlorosis

d.leaf chlorosis

40. Infection of Ascaris usually occurs by

a.imperfectly cooked pork

b.contaminated water and vegetables

c.mosquito bite

d.tse tse fly

41. One of the following is considered as a living and connecting link between Annelida and Arthropoda:

a.Peripatus

b.Sphenodon

c.Limulus

d.Balanoglossus

42. The protein deficiency disease is known as

a.scurvy

b.kwashiorkor

c.eczema

d.mycoses

43. Squeezing of leucocytes out from the endothelium of capillaries to fight foreign agents is known as

a.diapause

b.didelphis

c.diakinesis

d.diapedesis

44. The endosperm cell of an angiosperm has 24 chromosomes, the number of chromosomes in its megaspore, shall be

a.48

b.16

c.24

d.18

45. The sickle cell anaemia results in

a.leukaemia

b.polycemia

c.polychthemia

d.polio

46. Presence of a vestigial appendix in man suggests that our forebears were

a.omnivores

b.carnivores

c.fruit eaters

d.herbivores

47. Viruses were discovered by

a.Herelle

b.Iwanowiski

c.Stanley

d.Twort

48. In human body, the number of bones is

a.206

b.306

c.106

d.406

49. A womans fertility ceases at about 49-55 years. This is known as

a.menopause

b.menstruation

c.puberty

d.gestation

50. Which of these lives in water permanently?

a.Salamander

b.Frogs

c.Ichthyophis

d.Necturus

51. Which of the following statements is correct?

a.Blood of earthworm is blue in colour

b.Blood pigment of earthworm is haemocyanin

c.Blood of earthworm is red and haemoglobin is dissolved in RBC

d.Blood pigment of earthworm is red and haemoglobin is dissolved in plasma

52. The process of formation of blood corpuscles is known as

a.Haemaglutination

b.Haemolysis

c.Haemopoiesis

d.Haemophilia

53. In flowering plants, meiosis occurs at the time of

a.formation of pollen grains

b.formation of root primordia

c.formation of buds

d.germination of seed

54. Kala-azar is a disease caused by

a.Leishmania donovani transmitted by sandfly

b.Trypanosma gambiense transmitted by Tsetse fly

c.Wuchereria bancrofti transmitted by Culex

d.Taenia solium transmitted by infected pork

55. Germ theory of disease was proposed by

a.Robert Koch

b.T. Boveri

c.L. Pasteur

d.F. Jacob

56. The 13-celled male gametophyte of Selaginella has

a.8 cells of antheridium + 5 prothallial cells

b.12 cells of antheridium + 1 prothallial

c.9 cells of antheridium + 4 prothallial

d.10 cells of antheridium + 3 prothallial cells

57. The average metabolic rate of a male individual in terms of heart output/day is

a.2,600 kcal/day

b.1,600 kcal/day

c.4,000 kcal/day

d.3,200 kcal/day

58. The food-chain of an ecosystem can be represented as a pyramid divided into four or more

a.trophic levels

b.biotic communities

c.organisms

d.biomass

59. Multiflagellate sperms are the characteristic of

a.Pogonatum

b.Ferns

c.Mosses

d.Riccia

60. The resemblance between the south American llama and the African camel indicates a common ancestry. This is

a.homological evidence for evolution

b.none of these

c.biogeographic evidence for evolution

d.palaentological evidence for evolution

61. Moulting or shedding of skin in snakes is done by

a.dermis

b.cornified cells

c.stratum germinativum

d.epidermis

62. The smallest cranial nerve is

a.auditory

b.optic

c.olfactory

d.abducens

63. Colour is perceived by

a.rods in retina

b.cornea-lens complex

c.lense only

d.cones in retina

64. Phyllotaxy is the arrangement of

a.veins

b.branches

c.flower buds

d.leaves

65. Anticoagulant secreted by leech is

a.Haematin

b.Heparin

c.Hirudin

d.Haemozoin

66. The study of migration of birds is called

a.Nidology

b.Phenology

c.Ecology

d.Ornithology

67. A method of cell division which is characterized by the exact chromosome duplication is:

a.Meiosis

b.Mitosis

c.None of these

d.Apomixis

68. Which is the correct food chain?

a.grass → insect → bird → snake

b.grass → wolf → deer → buffalo

c.bacteria → grass → rabbit → wolf

d.grass → snake → inset → deer

69. The expulsion of completely developed foetus from the uterus is known as

a.parturition

b.ovuation

c.placentation

d.gestation

70. A motor nerve carries impulses from

a.from cranial nerves to the effectors

b.effectors to central nervous system

c.effectors to cranial nerves

d.central nervous system to the effector

71. Sexual reproduction or two fusing gametes of Spirogyra are

a.morophologically dissimilar

b.morphologically similar (isogamous) and physiologically dissimilar (anisogamous)

c.morphologically and physiologically dissimilar

d.morphologically similar

72. Which of the following is commercially most valuable:

a.Spring wood

b.Autumnwood

c.Sapwood

d.Heartwood

73. Typically all mammals have seven vertebrae except

a.giraffe

b.man

c.sea cow

d.elephant

74. Which disease is caused by a nematode?

a.Leprosy

b.Poliomyelitis

c.Amoebiasis

d.Filariasis

75. Algae and fungi are characterised by the possession of

a.chloroplasts

b.unicellular jacketed sex organs

c.multicellular jacketed sex organs

d.embryo

76. Among the following which is a test cross?

a.Tt x tt

b.Tt x Tt

c.TT x TT

d.TT x Tt

77. Colouration of frog is due to

a.inidescence of skin

b.presence of melanophores

c.growth of algal colonies of skin

d.presence of special chromatophores below the epidermal cells

78. Syngamy means

a.fusion of cytoplasm

b.fusion of similar spores

c.fusion of dissimilar spores

d.fusion of gametes

79. Which one of these is a cancerous disease

a.Angina

b.Malaria

c.Kwashiorkor

d.Leukaemia

80. If the main stem becomes fleshy and photosynthetic, it is called

a.phylloclade

b.phyllode

c.none of these

d.cladode

81. The female cockroach can be distinguished from the male by

a.short but broad abdomen and presence of anal styles

b.Short but broad abdomen and absence of anal styles

c.short cut broad abdomen and anal cerci

d.long but broad abdomen and anal cerci

82. Female cone is absent in

a.Taxus

b.None of these

c.Pinus

d.Cycas

83. Penicillium is a member of:

a.Deuteromycetes

b.Ascomyectes

c.Basidiomycetes

d.Phycomycetes

84. Dental formula of adult human being is

a.2,1,3,2/2,1,3,2

b.2,1,3,3/2,1,3,3

c.2,1,2,3/2,1,2,3

d.2,1,2,2/2,1,2,2

85. The mountain sickness in persons climbing to high attitudes without the aid of oxygen cylinders is due to

a.lack of sufficient amount of erythrocytes

b.anaemic hypoxia

c.arterial hypoxia

d.lack of sufficient amount of haemoglobin

86. Gametophytic generation is dominant in

a.Gymnosperms

b.Bryophytes

c.Pteridophytes

d.Angiosperms

87. Bryophyta acts as a connecting link between

a.terrestrial fungi and aquatic fungi

b.pteridophyta and gymnosperms

c.thallophyta and pteridophyta

d.algae and fungi

88. Malpighian bodies are found in

a.insects and involved in excretion

b.kidney of vertebrates and is involved in ultrafiltration

c.kidney of vertebrates and is involved in selective reabsorption

d.kidney of vertebrates and is involved in passive filtration

89. What amount of blood is ejected by ventricle per minute?

a.10 litres

b.15 litres

c.2 litres

d.5 litres

90. Sea cucumber belongs to class

a.Holothuroidea

b.Crinoidea

c.Ophiuroidea

d.Asteroidea

91. Pharyngeal gill slits are found in

a.star fish

b.shark

c.cray fish

d.cuttle fish

92. Trophozoites of E.histolytica reproduced by

a.conjugation

b.binary fission

c.budding

d.autogamy

93. Birds and reptiles excrete their nitrogenous waste in the form of

a.urea and uric acid respectively

b.uric acid

c.uric acid and urea

d.urea

94. Worms of Phylum Platyhelminthes are triploblastic, but do not possess

a.body cavity

b.alimentary canal

c.mouth

d.a gastro vascular cavity

95. Citrus canker is a common disease of lemon and oranges. It is caused by

a.Bacillus subtilis

b.Rhizobium

c.E. coli

d.None of these

96. Which mosquito sits making an acute angle?

a.Aedes

b.Anopheles

c.Culex

d.Psorophora

97. Study of soil is called:

a.Pedology

b.Pathology

c.Nematology

d.Ecology

98. During fertilization the spermatozoa penetrate through the egg membranes with the help of

a.acrosome

b.flagellum

c.sperm lysins released from the acrosome

d.mitochondria located at the middle piece

99. Commercial source of citric acid is:

a.Penicillium

b.Yeast

c.Aspergillus

d.Citrus fruit

100. Ostia are meant to

a.admit water current

b.ingest food

c.excrete waste products

d.pass out water current

CUET 2024 Biology MCQ Question Answers – Practice MCQ Questions on Biology

Biology MCQ Question Answers for CUET 2024

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