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. Oil in the skin is secreted by

a.sebaceous glands

b.sweat glands

c.mucous glands

d.hair follicles

2. Islets of Langerhans secrete

a.none of these

b.insulin

c.glucagons

d.enzymes

3. The locomotion of snake is helped by

a.reduced limbs

b.ribs only

c.reduced ribs

d.ribs and reduced limbs

4. Study of soil is called:

a.Ecology

b.Nematology

c.Pedology

d.Pathology

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

a.stratum germinativum

b.epidermis

c.dermis

d.cornified cells

6. Multiflagellate sperms are the characteristic of

a.Mosses

b.Pogonatum

c.Riccia

d.Ferns

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

a.short cut broad abdomen and anal cerci

b.short but broad abdomen and presence of anal styles

c.long but broad abdomen and anal cerci

d.Short but broad abdomen and absence of anal styles

8. A posterior pituitary hormone released during parturition is

a.Vasopressin

b.ACTH

c.Oxytocin

d.ICSH

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

a.parturition

b.gestation

c.ovuation

d.placentation

10. 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

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

a.corolla

b.pappus

c.bracts

d.hooks

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

a.biomass

b.organisms

c.biotic communities

d.trophic levels

13. Adams apple in man is

a.epiglottis

b.cartilages of the trachea

c.cartilage of hyoid apparatus

d.thyroid cartilage of larynx

14. Commercial source of citric acid is:

a.Yeast

b.Aspergillus

c.Penicillium

d.Citrus fruit

15. Infection of Ascaris usually occurs by

a.imperfectly cooked pork

b.mosquito bite

c.contaminated water and vegetables

d.tse tse fly

16. In human body, the number of bones is

a.306

b.206

c.106

d.406

17. Which one of these is a cancerous disease

a.Leukaemia

b.Kwashiorkor

c.Angina

d.Malaria

18. Which mosquito sits making an acute angle?

a.Psorophora

b.Culex

c.Aedes

d.Anopheles

19. Sponges belong to the phylum

a.sporozoa

b.porifera

c.coelenterate

d.mastigophora

20. Kala-azar is a disease caused by

a.Trypanosma gambiense transmitted by Tsetse fly

b.Wuchereria bancrofti transmitted by Culex

c.Taenia solium transmitted by infected pork

d.Leishmania donovani transmitted by sandfly

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

a.diapedesis

b.diakinesis

c.diapause

d.didelphis

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

a.porifera

b.platyhelminthes

c.coelenterate

d.protozoa

23. Malpighian bodies are found in

a.kidney of vertebrates and is involved in ultrafiltration

b.kidney of vertebrates and is involved in passive filtration

c.kidney of vertebrates and is involved in selective reabsorption

d.insects and involved in excretion

24. The locomotor organs of Echinoderms is called

a.setae

b.parapodia

c.pseudopodia

d.tube feet

25. A motor nerve carries impulses from

a.effectors to cranial nerves

b.central nervous system to the effector

c.from cranial nerves to the effectors

d.effectors to central nervous system

26. Which of these lives in water permanently?

a.Necturus

b.Salamander

c.Ichthyophis

d.Frogs

27. 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.GUA AUC GUA GUA CUG

b.TAG ATG ATG GUA CUG

c.GTA ATG GTA GAT CTA

d.GTA ATC GAT GTA CTA

28. Ostia are meant to

a.ingest food

b.pass out water current

c.excrete waste products

d.admit water current

29. Germ theory of disease was proposed by

a.T. Boveri

b.Robert Koch

c.F. Jacob

d.L. Pasteur

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

a.menstruation

b.puberty

c.gestation

d.menopause

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

a.eohippus

b.pliohippus

c.miobibbus

d.merychippus

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

a.species

b.class

c.order

d.family

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

a.mouth

b.a gastro vascular cavity

c.body cavity

d.alimentary canal

34. Sea cucumber belongs to class

a.Asteroidea

b.Ophiuroidea

c.Holothuroidea

d.Crinoidea

35. The largest ovule in plant kingdom is seen is

a.Both A and B

b.Cycas circinalis

c.Cycas revolute

d.None of these

36. 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

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

a.Balanoglossus

b.Limulus

c.Sphenodon

d.Peripatus

38. Anticoagulant secreted by leech is

a.Haematin

b.Haemozoin

c.Hirudin

d.Heparin

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

a.4,000 kcal/day

b.1,600 kcal/day

c.3,200 kcal/day

d.2,600 kcal/day

40. Female cone is absent in

a.None of these

b.Taxus

c.Pinus

d.Cycas

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

a.formation of root primordia

b.formation of pollen grains

c.formation of buds

d.germination of seed

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

a.Cloaca

b.A pair of large kidneys

c.A pair of ovaries and oviducts

d.A pair of testes

43. Colour is perceived by

a.rods in retina

b.cornea-lens complex

c.cones in retina

d.lense only

44. Which disease is caused by a nematode?

a.Filariasis

b.Leprosy

c.Poliomyelitis

d.Amoebiasis

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

a.none of these

b.homological evidence for evolution

c.palaentological evidence for evolution

d.biogeographic evidence for evolution

46. Nematocysts of Hydra are important for

a.paralysing prey

b.cataching prey

c.testing the food

d.testing the water

47. A mammals which never drinks water is

a.spiny ant eater

b.kangaroo

c.kangaroo rat

d.shrew

48. Androgens are secreted from

a.Leydig cels and adrenal cortex

b.Adenohypophysis and tesis

c.Testis and adrenal cortex

d.Leydig cells and placenta

49. The 13-celled male gametophyte of Selaginella has

a.8 cells of antheridium + 5 prothallial cells

b.9 cells of antheridium + 4 prothallial

c.10 cells of antheridium + 3 prothallial cells

d.12 cells of antheridium + 1 prothallial

50. Pharyngeal gill slits are found in

a.star fish

b.cuttle fish

c.shark

d.cray fish

51. The deficiency of magnesium results in

a.leaf chlorosis

b.wilting of plants

c.interveinal chlorosis

d.none of these

52. Bryophyta acts as a connecting link between

a.terrestrial fungi and aquatic fungi

b.thallophyta and pteridophyta

c.pteridophyta and gymnosperms

d.algae and fungi

53. Sebaceous glands are found in

a.epithelium of intestine of frog

b.epidermis of skin of mammals

c.epithelium of stomach of frog

d.dermis of skin of mammals

54. In rabbit, the danger signal is given by

a.sound

b.external ear

c.fore limbs

d.tail

55. Sexual reproduction or two fusing gametes of Spirogyra are

a.morphologically and physiologically dissimilar

b.morphologically similar

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

d.morophologically dissimilar

56. The smallest cranial nerve is

a.olfactory

b.optic

c.abducens

d.auditory

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

a.malleus, stapes, incus

b.incus, stapes, malleus

c.stapes, incus, malleus

d.malleus, incus, stapes

58. Alternation of generations is otherwise known as

a.Epigenesis

b.Dimorphism

c.Metagenesis

d.Biogenesis

59. The respiratory organs in a freshwater mussel are

a.pulmonary sacs

b.respiratory siphons

c.book lungs

d.gills

60. Sea hare is the common name of

a.Octopus

b.Aplysia

c.Doris

d.Sepia

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

a.cooperation

b.mutualism

c.commensalism

d.parasitism

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

a.arthropods

b.coelenterates

c.sponges

d.annelids

63. Phyllotaxy is the arrangement of

a.veins

b.branches

c.leaves

d.flower buds

64. The best indicator of SO2 pollution is

a.Algae

b.Fungus

c.Lichens

d.Ferns

65. Which of the following statements is correct?

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

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

c.Blood of earthworm is blue in colour

d.Blood pigment of earthworm is haemocyanin

66. Which of the following is commercially most valuable:

a.Heartwood

b.Autumnwood

c.Spring wood

d.Sapwood

67. Fat soluble vitamins are

a.E, D and B

b.A, D and E

c.B, C and D

d.A, B and C

68. Chlorophyll contains

a.K

b.Mg

c.Fe

d.Mn

69. 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

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

a.Rhizobium

b.Bacillus subtilis

c.None of these

d.E. coli

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

a.sperm lysins released from the acrosome

b.mitochondria located at the middle piece

c.flagellum

d.acrosome

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

a.Haemophilia

b.Haemolysis

c.Haemopoiesis

d.Haemaglutination

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

a.Meiosis

b.Mitosis

c.Apomixis

d.None of these

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

a.5 litres

b.15 litres

c.2 litres

d.10 litres

75. Algae and fungi are characterised by the possession of

a.chloroplasts

b.embryo

c.unicellular jacketed sex organs

d.multicellular jacketed sex organs

76. Colour blidness is caused due to

a.sex-linked abnormality

b.absence of rods in retina

c.deficiency of vitamin C

d.absence of visual purple in retina

77. Groundnut is

a.Arachis hypogaea

b.Cannabis sativa

c.Psidium guajava

d.Oryza sativa

78. Viruses were discovered by

a.Herelle

b.Stanley

c.Twort

d.Iwanowiski

79. The function of cristae in a mitochondrion is

a.carbon assimilation

b.intake of Oxygen

c.electron transport and ATP synthesis

d.elimination of Carbon Dioxide

80. Among the following which is a test cross?

a.TT x TT

b.TT x Tt

c.Tt x tt

d.Tt x Tt

81. Typically all mammals have seven vertebrae except

a.man

b.elephant

c.giraffe

d.sea cow

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

a.development of sturdy eggs

b.change over to herbivorous feeding

c.occurrence of metamoophosis on amphibian

d.evolution of terrestrial habit

83. 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

84. Dental formula of adult human being is

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

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

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

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

85. Trophozoites of E.histolytica reproduced by

a.conjugation

b.autogamy

c.budding

d.binary fission

86. The protein deficiency disease is known as

a.mycoses

b.scurvy

c.eczema

d.kwashiorkor

87. 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.arterial hypoxia

c.lack of sufficient amount of haemoglobin

d.anaemic hypoxia

88. The sickle cell anaemia results in

a.polycemia

b.leukaemia

c.polychthemia

d.polio

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

a.omnivores

b.herbivores

c.carnivores

d.fruit eaters

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

a.urea

b.uric acid and urea

c.urea and uric acid respectively

d.uric acid

91. Red rust of tea is caused by

a.Pteris

b.Oedogonium

c.Puccinia

d.Cephaleuros

92. The study of migration of birds is called

a.Nidology

b.Ecology

c.Phenology

d.Ornithology

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

a.Rabies

b.Influenza

c.Small pox

d.Whooping cough

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

a.impotency

b.castration

c.cryptorchidism

d.paedogenes

95. Syngamy means

a.fusion of cytoplasm

b.fusion of similar spores

c.fusion of dissimilar spores

d.fusion of gametes

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

a.phyllode

b.cladode

c.none of these

d.phylloclade

97. The leaf lamina are generally reduced in

a.mesophytes

b.xerophytes

c.hydrophytes

d.epiphytes

98. Penicillium is a member of:

a.Phycomycetes

b.Ascomyectes

c.Basidiomycetes

d.Deuteromycetes

99. Gametophytic generation is dominant in

a.Pteridophytes

b.Gymnosperms

c.Bryophytes

d.Angiosperms

100. Which is the correct food chain?

a.bacteria → grass → rabbit → wolf

b.grass → snake → inset → deer

c.grass → wolf → deer → buffalo

d.grass → insect → bird → snake

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

Biology MCQ Question Answers for CUET 2026

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