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. 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

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

a.diapedesis

b.didelphis

c.diakinesis

d.diapause

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

a.palaentological evidence for evolution

b.biogeographic evidence for evolution

c.none of these

d.homological evidence for evolution

4. Sponges belong to the phylum

a.sporozoa

b.mastigophora

c.coelenterate

d.porifera

5. Nematocysts of Hydra are important for

a.testing the food

b.paralysing prey

c.cataching prey

d.testing the water

6. The sickle cell anaemia results in

a.leukaemia

b.polio

c.polychthemia

d.polycemia

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

a.urea

b.uric acid

c.urea and uric acid respectively

d.uric acid and urea

8. Androgens are secreted from

a.Testis and adrenal cortex

b.Adenohypophysis and tesis

c.Leydig cells and placenta

d.Leydig cels and adrenal cortex

9. The largest ovule in plant kingdom is seen is

a.Both A and B

b.Cycas circinalis

c.None of these

d.Cycas revolute

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

a.A pair of ovaries and oviducts

b.Cloaca

c.A pair of large kidneys

d.A pair of testes

11. The protein deficiency disease is known as

a.kwashiorkor

b.mycoses

c.eczema

d.scurvy

12. The 13-celled male gametophyte of Selaginella has

a.10 cells of antheridium + 3 prothallial cells

b.9 cells of antheridium + 4 prothallial

c.12 cells of antheridium + 1 prothallial

d.8 cells of antheridium + 5 prothallial cells

13. Algae and fungi are characterised by the possession of

a.chloroplasts

b.embryo

c.multicellular jacketed sex organs

d.unicellular jacketed sex organs

14. In rabbit, the danger signal is given by

a.sound

b.fore limbs

c.external ear

d.tail

15. The study of migration of birds is called

a.Ecology

b.Phenology

c.Ornithology

d.Nidology

16. Female cone is absent in

a.None of these

b.Pinus

c.Cycas

d.Taxus

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

a.flagellum

b.acrosome

c.sperm lysins released from the acrosome

d.mitochondria located at the middle piece

18. Sea cucumber belongs to class

a.Crinoidea

b.Holothuroidea

c.Asteroidea

d.Ophiuroidea

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

a.puberty

b.gestation

c.menopause

d.menstruation

20. The smallest cranial nerve is

a.auditory

b.olfactory

c.optic

d.abducens

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

a.Peripatus

b.Limulus

c.Sphenodon

d.Balanoglossus

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

a.formation of root primordia

b.formation of buds

c.germination of seed

d.formation of pollen grains

23. Which of the following is commercially most valuable:

a.Heartwood

b.Sapwood

c.Spring wood

d.Autumnwood

24. Typically all mammals have seven vertebrae except

a.elephant

b.man

c.giraffe

d.sea cow

25. Groundnut is

a.Arachis hypogaea

b.Cannabis sativa

c.Psidium guajava

d.Oryza sativa

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

a.corolla

b.pappus

c.hooks

d.bracts

27. Which mosquito sits making an acute angle?

a.Aedes

b.Culex

c.Psorophora

d.Anopheles

28. Phyllotaxy is the arrangement of

a.leaves

b.branches

c.veins

d.flower buds

29. Chlorophyll contains

a.K

b.Fe

c.Mn

d.Mg

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

a.Short but broad abdomen and absence of anal styles

b.short cut broad abdomen and anal cerci

c.long but broad abdomen and anal cerci

d.short but broad abdomen and presence of anal styles

31. A mammals which never drinks water is

a.shrew

b.spiny ant eater

c.kangaroo rat

d.kangaroo

32. Oil in the skin is secreted by

a.sweat glands

b.sebaceous glands

c.mucous glands

d.hair follicles

33. Viruses were discovered by

a.Herelle

b.Twort

c.Stanley

d.Iwanowiski

34. The respiratory organs in a freshwater mussel are

a.pulmonary sacs

b.book lungs

c.gills

d.respiratory siphons

35. Colour is perceived by

a.cones in retina

b.lense only

c.cornea-lens complex

d.rods in retina

36. The best indicator of SO2 pollution is

a.Fungus

b.Ferns

c.Lichens

d.Algae

37. 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

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

a.sponges

b.coelenterates

c.annelids

d.arthropods

39. Which is the correct food chain?

a.grass → snake → inset → deer

b.grass → wolf → deer → buffalo

c.grass → insect → bird → snake

d.bacteria → grass → rabbit → wolf

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

a.eohippus

b.pliohippus

c.miobibbus

d.merychippus

41. A motor nerve carries impulses from

a.from cranial nerves to the effectors

b.central nervous system to the effector

c.effectors to central nervous system

d.effectors to cranial nerves

42. 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.arterial hypoxia

c.lack of sufficient amount of erythrocytes

d.anaemic hypoxia

43. Sebaceous glands are found in

a.epithelium of intestine of frog

b.epithelium of stomach of frog

c.dermis of skin of mammals

d.epidermis of skin of mammals

44. The deficiency of magnesium results in

a.interveinal chlorosis

b.leaf chlorosis

c.none of these

d.wilting of plants

45. Sexual reproduction or two fusing gametes of Spirogyra are

a.morophologically dissimilar

b.morphologically similar

c.morphologically and physiologically dissimilar

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

46. Sea hare is the common name of

a.Octopus

b.Aplysia

c.Sepia

d.Doris

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

a.organisms

b.trophic levels

c.biomass

d.biotic communities

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

a.phylloclade

b.none of these

c.cladode

d.phyllode

49. The locomotor organs of Echinoderms is called

a.tube feet

b.pseudopodia

c.parapodia

d.setae

50. Adams apple in man is

a.epiglottis

b.thyroid cartilage of larynx

c.cartilage of hyoid apparatus

d.cartilages of the trachea

51. Among the following which is a test cross?

a.Tt x tt

b.Tt x Tt

c.TT x Tt

d.TT x TT

52. 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

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

a.Rhizobium

b.Bacillus subtilis

c.E. coli

d.None of these

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

a.dermis

b.epidermis

c.stratum germinativum

d.cornified cells

55. Syngamy means

a.fusion of dissimilar spores

b.fusion of cytoplasm

c.fusion of similar spores

d.fusion of gametes

56. Which disease is caused by a nematode?

a.Poliomyelitis

b.Leprosy

c.Filariasis

d.Amoebiasis

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

a.ovuation

b.placentation

c.parturition

d.gestation

58. The locomotion of snake is helped by

a.ribs only

b.reduced ribs

c.ribs and reduced limbs

d.reduced limbs

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

a.incus, stapes, malleus

b.stapes, incus, malleus

c.malleus, stapes, incus

d.malleus, incus, stapes

60. Study of soil is called:

a.Ecology

b.Nematology

c.Pedology

d.Pathology

61. Which of these lives in water permanently?

a.Ichthyophis

b.Salamander

c.Frogs

d.Necturus

62. Penicillium is a member of:

a.Basidiomycetes

b.Phycomycetes

c.Ascomyectes

d.Deuteromycetes

63. A posterior pituitary hormone released during parturition is

a.Vasopressin

b.ICSH

c.Oxytocin

d.ACTH

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

a.cryptorchidism

b.castration

c.paedogenes

d.impotency

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

a.cooperation

b.parasitism

c.commensalism

d.mutualism

66. Colouration of frog is due to

a.growth of algal colonies of skin

b.inidescence of skin

c.presence of special chromatophores below the epidermal cells

d.presence of melanophores

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

a.development of sturdy eggs

b.evolution of terrestrial habit

c.occurrence of metamoophosis on amphibian

d.change over to herbivorous feeding

68. Fat soluble vitamins are

a.A, B and C

b.A, D and E

c.B, C and D

d.E, D and B

69. Gametophytic generation is dominant in

a.Bryophytes

b.Angiosperms

c.Pteridophytes

d.Gymnosperms

70. Germ theory of disease was proposed by

a.F. Jacob

b.T. Boveri

c.L. Pasteur

d.Robert Koch

71. 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

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

a.ray fins

b.pectoral fins

c.anterior fins

d.paired fins

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

a.a gastro vascular cavity

b.body cavity

c.alimentary canal

d.mouth

74. Red rust of tea is caused by

a.Puccinia

b.Pteris

c.Cephaleuros

d.Oedogonium

75. Pharyngeal gill slits are found in

a.cray fish

b.cuttle fish

c.shark

d.star fish

76. Anticoagulant secreted by leech is

a.Hirudin

b.Haemozoin

c.Haematin

d.Heparin

77. Which of the following statements is correct?

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

b.Blood of earthworm is blue in colour

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

d.Blood pigment of earthworm is haemocyanin

78. 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.GUA AUC GUA GUA CUG

c.GTA ATG GTA GAT CTA

d.TAG ATG ATG GUA CUG

79. Ostia are meant to

a.ingest food

b.admit water current

c.excrete waste products

d.pass out water current

80. The function of cristae in a mitochondrion is

a.intake of Oxygen

b.carbon assimilation

c.elimination of Carbon Dioxide

d.electron transport and ATP synthesis

81. Multiflagellate sperms are the characteristic of

a.Mosses

b.Riccia

c.Ferns

d.Pogonatum

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

a.platyhelminthes

b.porifera

c.coelenterate

d.protozoa

83. Infection of Ascaris usually occurs by

a.imperfectly cooked pork

b.tse tse fly

c.contaminated water and vegetables

d.mosquito bite

84. Dental formula of adult human being is

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

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

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

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

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

a.5 litres

b.10 litres

c.2 litres

d.15 litres

86. Islets of Langerhans secrete

a.glucagons

b.enzymes

c.insulin

d.none of these

87. Which one of these is a cancerous disease

a.Angina

b.Kwashiorkor

c.Leukaemia

d.Malaria

88. Trophozoites of E.histolytica reproduced by

a.binary fission

b.conjugation

c.autogamy

d.budding

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

a.omnivores

b.fruit eaters

c.herbivores

d.carnivores

90. 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 ultrafiltration

d.kidney of vertebrates and is involved in selective reabsorption

91. Kala-azar is a disease caused by

a.Wuchereria bancrofti transmitted by Culex

b.Trypanosma gambiense transmitted by Tsetse fly

c.Taenia solium transmitted by infected pork

d.Leishmania donovani transmitted by sandfly

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

a.Small pox

b.Whooping cough

c.Influenza

d.Rabies

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

a.None of these

b.Mitosis

c.Apomixis

d.Meiosis

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

a.3,200 kcal/day

b.2,600 kcal/day

c.1,600 kcal/day

d.4,000 kcal/day

95. Alternation of generations is otherwise known as

a.Dimorphism

b.Biogenesis

c.Metagenesis

d.Epigenesis

96. In human body, the number of bones is

a.306

b.106

c.406

d.206

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

a.Haemolysis

b.Haemophilia

c.Haemopoiesis

d.Haemaglutination

98. Commercial source of citric acid is:

a.Aspergillus

b.Penicillium

c.Citrus fruit

d.Yeast

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

a.species

b.class

c.order

d.family

100. The leaf lamina are generally reduced in

a.hydrophytes

b.epiphytes

c.mesophytes

d.xerophytes

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

Biology MCQ Question Answers for CUET 2026

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