CUET 2026 Biology MCQs for Practice

Biology MCQ Question Answers for CUET 2026

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 2026 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.

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

a.Small pox

b.Whooping cough

c.Rabies

d.Influenza

2. A mammals which never drinks water is

a.shrew

b.kangaroo rat

c.kangaroo

d.spiny ant eater

3. Phyllotaxy is the arrangement of

a.branches

b.flower buds

c.leaves

d.veins

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

a.diapedesis

b.didelphis

c.diakinesis

d.diapause

5. The leaf lamina are generally reduced in

a.hydrophytes

b.mesophytes

c.epiphytes

d.xerophytes

6. Alternation of generations is otherwise known as

a.Dimorphism

b.Metagenesis

c.Epigenesis

d.Biogenesis

7. Malpighian bodies are found in

a.insects and involved in excretion

b.kidney of vertebrates and is involved in passive filtration

c.kidney of vertebrates and is involved in selective reabsorption

d.kidney of vertebrates and is involved in ultrafiltration

8. The sickle cell anaemia results in

a.polio

b.polycemia

c.polychthemia

d.leukaemia

9. The smallest cranial nerve is

a.abducens

b.auditory

c.olfactory

d.optic

10. Which of the following statements is correct?

a.Blood of earthworm is blue in colour

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

c.Blood pigment of earthworm is haemocyanin

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

11. The best indicator of SO2 pollution is

a.Lichens

b.Algae

c.Ferns

d.Fungus

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

a.stratum germinativum

b.cornified cells

c.epidermis

d.dermis

13. Ostia are meant to

a.ingest food

b.pass out water current

c.excrete waste products

d.admit water current

14. Sea cucumber belongs to class

a.Holothuroidea

b.Asteroidea

c.Ophiuroidea

d.Crinoidea

15. Female cone is absent in

a.None of these

b.Taxus

c.Pinus

d.Cycas

16. Colouration of frog is due to

a.inidescence of skin

b.presence of special chromatophores below the epidermal cells

c.growth of algal colonies of skin

d.presence of melanophores

17. The deficiency of magnesium results in

a.none of these

b.leaf chlorosis

c.wilting of plants

d.interveinal chlorosis

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

a.acrosome

b.sperm lysins released from the acrosome

c.flagellum

d.mitochondria located at the middle piece

19. Colour blidness is caused due to

a.absence of rods in retina

b.sex-linked abnormality

c.deficiency of vitamin C

d.absence of visual purple in retina

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

a.annelids

b.arthropods

c.sponges

d.coelenterates

21. The respiratory organs in a freshwater mussel are

a.gills

b.pulmonary sacs

c.book lungs

d.respiratory siphons

22. Which of these lives in water permanently?

a.Frogs

b.Salamander

c.Ichthyophis

d.Necturus

23. A motor nerve carries impulses from

a.effectors to cranial nerves

b.from cranial nerves to the effectors

c.central nervous system to the effector

d.effectors to central nervous system

24. Sea hare is the common name of

a.Aplysia

b.Octopus

c.Doris

d.Sepia

25. The 13-celled male gametophyte of Selaginella has

a.10 cells of antheridium + 3 prothallial cells

b.8 cells of antheridium + 5 prothallial cells

c.12 cells of antheridium + 1 prothallial

d.9 cells of antheridium + 4 prothallial

26. Which of the following is commercially most valuable:

a.Autumnwood

b.Spring wood

c.Sapwood

d.Heartwood

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

a.A pair of large kidneys

b.A pair of ovaries and oviducts

c.A pair of testes

d.Cloaca

28. The protein deficiency disease is known as

a.eczema

b.scurvy

c.kwashiorkor

d.mycoses

29. Nematocysts of Hydra are important for

a.testing the water

b.paralysing prey

c.testing the food

d.cataching prey

30. Which mosquito sits making an acute angle?

a.Culex

b.Anopheles

c.Aedes

d.Psorophora

31. Oil in the skin is secreted by

a.mucous glands

b.sweat glands

c.sebaceous glands

d.hair follicles

32. Which one of these is a cancerous disease

a.Angina

b.Leukaemia

c.Kwashiorkor

d.Malaria

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

a.stapes, incus, malleus

b.incus, stapes, malleus

c.malleus, incus, stapes

d.malleus, stapes, incus

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

a.porifera

b.protozoa

c.platyhelminthes

d.coelenterate

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

a.body cavity

b.mouth

c.a gastro vascular cavity

d.alimentary canal

36. Algae and fungi are characterised by the possession of

a.embryo

b.multicellular jacketed sex organs

c.chloroplasts

d.unicellular jacketed sex organs

37. Commercial source of citric acid is:

a.Yeast

b.Aspergillus

c.Citrus fruit

d.Penicillium

38. Fat soluble vitamins are

a.E, D and B

b.A, D and E

c.A, B and C

d.B, C and D

39. The locomotor organs of Echinoderms is called

a.setae

b.tube feet

c.pseudopodia

d.parapodia

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

a.paedogenes

b.castration

c.impotency

d.cryptorchidism

41. Red rust of tea is caused by

a.Oedogonium

b.Pteris

c.Cephaleuros

d.Puccinia

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

a.18

b.24

c.48

d.16

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

a.biogeographic evidence for evolution

b.none of these

c.homological evidence for evolution

d.palaentological evidence for evolution

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

a.menstruation

b.gestation

c.menopause

d.puberty

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

a.commensalism

b.parasitism

c.cooperation

d.mutualism

46. Which is the correct food chain?

a.grass → wolf → deer → buffalo

b.grass → snake → inset → deer

c.grass → insect → bird → snake

d.bacteria → grass → rabbit → wolf

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

a.parturition

b.ovuation

c.gestation

d.placentation

48. Infection of Ascaris usually occurs by

a.tse tse fly

b.mosquito bite

c.contaminated water and vegetables

d.imperfectly cooked pork

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

a.pappus

b.bracts

c.hooks

d.corolla

50. The study of migration of birds is called

a.Phenology

b.Ornithology

c.Nidology

d.Ecology

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

a.long but broad abdomen and anal cerci

b.Short but broad abdomen and absence of anal styles

c.short but broad abdomen and presence of anal styles

d.short cut broad abdomen and anal cerci

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

a.None of these

b.Apomixis

c.Meiosis

d.Mitosis

53. Multiflagellate sperms are the characteristic of

a.Ferns

b.Riccia

c.Pogonatum

d.Mosses

54. A posterior pituitary hormone released during parturition is

a.Oxytocin

b.ACTH

c.ICSH

d.Vasopressin

55. 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

56. Syngamy means

a.fusion of gametes

b.fusion of dissimilar spores

c.fusion of cytoplasm

d.fusion of similar spores

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

a.miobibbus

b.eohippus

c.pliohippus

d.merychippus

58. In human body, the number of bones is

a.106

b.206

c.406

d.306

59. What is monothecous stamen?

a.It is a stamen with one lobe

b.It is a stamen with many lobes

c.It is a stamen with no lobes

d.It is a sterile stamen

60. Penicillium is a member of:

a.Phycomycetes

b.Basidiomycetes

c.Deuteromycetes

d.Ascomyectes

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

a.formation of pollen grains

b.germination of seed

c.formation of buds

d.formation of root primordia

62. Adams apple in man is

a.cartilages of the trachea

b.cartilage of hyoid apparatus

c.epiglottis

d.thyroid cartilage of larynx

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

a.lack of sufficient amount of haemoglobin

b.anaemic hypoxia

c.arterial hypoxia

d.lack of sufficient amount of erythrocytes

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

a.occurrence of metamoophosis on amphibian

b.change over to herbivorous feeding

c.development of sturdy eggs

d.evolution of terrestrial habit

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

a.trophic levels

b.biomass

c.organisms

d.biotic communities

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

a.carnivores

b.fruit eaters

c.omnivores

d.herbivores

67. The function of cristae in a mitochondrion is

a.intake of Oxygen

b.elimination of Carbon Dioxide

c.electron transport and ATP synthesis

d.carbon assimilation

68. Germ theory of disease was proposed by

a.T. Boveri

b.F. Jacob

c.L. Pasteur

d.Robert Koch

69. Sponges belong to the phylum

a.mastigophora

b.sporozoa

c.porifera

d.coelenterate

70. Study of soil is called:

a.Pathology

b.Nematology

c.Pedology

d.Ecology

71. 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.TAG ATG ATG GUA CUG

b.GTA ATG GTA GAT CTA

c.GTA ATC GAT GTA CTA

d.GUA AUC GUA GUA CUG

72. Bryophyta acts as a connecting link between

a.pteridophyta and gymnosperms

b.terrestrial fungi and aquatic fungi

c.algae and fungi

d.thallophyta and pteridophyta

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

a.paired fins

b.ray fins

c.pectoral fins

d.anterior fins

74. Chlorophyll contains

a.Fe

b.Mn

c.K

d.Mg

75. Gametophytic generation is dominant in

a.Pteridophytes

b.Bryophytes

c.Gymnosperms

d.Angiosperms

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

a.1,600 kcal/day

b.3,200 kcal/day

c.4,000 kcal/day

d.2,600 kcal/day

77. Kala-azar is a disease caused by

a.Trypanosma gambiense transmitted by Tsetse fly

b.Leishmania donovani transmitted by sandfly

c.Taenia solium transmitted by infected pork

d.Wuchereria bancrofti transmitted by Culex

78. Among the following which is a test cross?

a.TT x TT

b.Tt x Tt

c.Tt x tt

d.TT x Tt

79. Islets of Langerhans secrete

a.insulin

b.glucagons

c.enzymes

d.none of these

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

a.Limulus

b.Balanoglossus

c.Sphenodon

d.Peripatus

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

a.5 litres

b.10 litres

c.15 litres

d.2 litres

82. Groundnut is

a.Cannabis sativa

b.Oryza sativa

c.Arachis hypogaea

d.Psidium guajava

83. The largest ovule in plant kingdom is seen is

a.Both A and B

b.Cycas revolute

c.Cycas circinalis

d.None of these

84. Colour is perceived by

a.cornea-lens complex

b.cones in retina

c.lense only

d.rods in retina

85. Typically all mammals have seven vertebrae except

a.man

b.elephant

c.giraffe

d.sea cow

86. Trophozoites of E.histolytica reproduced by

a.conjugation

b.binary fission

c.autogamy

d.budding

87. Sexual reproduction or two fusing gametes of Spirogyra are

a.morophologically dissimilar

b.morphologically and physiologically dissimilar

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

d.morphologically similar

88. Viruses were discovered by

a.Stanley

b.Herelle

c.Twort

d.Iwanowiski

89. Pharyngeal gill slits are found in

a.cuttle fish

b.cray fish

c.shark

d.star fish

90. Sebaceous glands are found in

a.dermis of skin of mammals

b.epithelium of intestine of frog

c.epidermis of skin of mammals

d.epithelium of stomach of frog

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

a.family

b.class

c.species

d.order

92. Dental formula of adult human being is

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

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

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

d.2,1,3,3/2,1,3,3

93. Which disease is caused by a nematode?

a.Poliomyelitis

b.Leprosy

c.Amoebiasis

d.Filariasis

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

a.Bacillus subtilis

b.None of these

c.E. coli

d.Rhizobium

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

a.Haemopoiesis

b.Haemaglutination

c.Haemophilia

d.Haemolysis

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

a.cladode

b.none of these

c.phyllode

d.phylloclade

97. Anticoagulant secreted by leech is

a.Haemozoin

b.Haematin

c.Hirudin

d.Heparin

98. In rabbit, the danger signal is given by

a.tail

b.fore limbs

c.sound

d.external ear

99. The locomotion of snake is helped by

a.ribs only

b.reduced ribs

c.reduced limbs

d.ribs and reduced limbs

100. Androgens are secreted from

a.Leydig cells and placenta

b.Leydig cels and adrenal cortex

c.Adenohypophysis and tesis

d.Testis and adrenal cortex

CUET 2026 Biology MCQ Question Answers – Practice MCQ Questions on Biology

Biology MCQ Question Answers for CUET 2026

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