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.

Please wait...

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

a.pappus

b.corolla

c.bracts

d.hooks

2. The function of cristae in a mitochondrion is

a.intake of Oxygen

b.electron transport and ATP synthesis

c.carbon assimilation

d.elimination of Carbon Dioxide

3. The study of migration of birds is called

a.Phenology

b.Ornithology

c.Ecology

d.Nidology

4. 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

5. Adams apple in man is

a.epiglottis

b.thyroid cartilage of larynx

c.cartilages of the trachea

d.cartilage of hyoid apparatus

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

a.Sphenodon

b.Peripatus

c.Balanoglossus

d.Limulus

7. Sexual reproduction or two fusing gametes of Spirogyra are

a.morophologically dissimilar

b.morphologically and physiologically dissimilar

c.morphologically similar

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

8. Among the following which is a test cross?

a.Tt x Tt

b.TT x Tt

c.Tt x tt

d.TT x TT

9. The smallest cranial nerve is

a.abducens

b.olfactory

c.auditory

d.optic

10. Which of these lives in water permanently?

a.Ichthyophis

b.Salamander

c.Frogs

d.Necturus

11. Sea cucumber belongs to class

a.Ophiuroidea

b.Holothuroidea

c.Crinoidea

d.Asteroidea

12. 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

13. Algae and fungi are characterised by the possession of

a.unicellular jacketed sex organs

b.chloroplasts

c.embryo

d.multicellular jacketed sex organs

14. Penicillium is a member of:

a.Ascomyectes

b.Deuteromycetes

c.Basidiomycetes

d.Phycomycetes

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

a.E. coli

b.Bacillus subtilis

c.Rhizobium

d.None of these

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

a.malleus, incus, stapes

b.stapes, incus, malleus

c.malleus, stapes, incus

d.incus, stapes, malleus

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

a.anaemic hypoxia

b.lack of sufficient amount of haemoglobin

c.lack of sufficient amount of erythrocytes

d.arterial hypoxia

18. Kala-azar is a disease caused by

a.Wuchereria bancrofti transmitted by Culex

b.Taenia solium transmitted by infected pork

c.Trypanosma gambiense transmitted by Tsetse fly

d.Leishmania donovani transmitted by sandfly

19. Trophozoites of E.histolytica reproduced by

a.autogamy

b.binary fission

c.conjugation

d.budding

20. Female cone is absent in

a.Taxus

b.None of these

c.Cycas

d.Pinus

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

a.evolution of terrestrial habit

b.development of sturdy eggs

c.occurrence of metamoophosis on amphibian

d.change over to herbivorous feeding

22. 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

23. Fat soluble vitamins are

a.B, C and D

b.A, B and C

c.E, D and B

d.A, D and E

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

a.phyllode

b.phylloclade

c.none of these

d.cladode

25. The locomotion of snake is helped by

a.reduced limbs

b.ribs and reduced limbs

c.reduced ribs

d.ribs only

26. Which is the correct food chain?

a.grass → snake → inset → deer

b.bacteria → grass → rabbit → wolf

c.grass → wolf → deer → buffalo

d.grass → insect → bird → snake

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

a.Rabies

b.Small pox

c.Whooping cough

d.Influenza

28. Syngamy means

a.fusion of cytoplasm

b.fusion of gametes

c.fusion of similar spores

d.fusion of dissimilar spores

29. The best indicator of SO2 pollution is

a.Algae

b.Lichens

c.Ferns

d.Fungus

30. Ostia are meant to

a.excrete waste products

b.pass out water current

c.admit water current

d.ingest food

31. Sebaceous glands are found in

a.epidermis of skin of mammals

b.epithelium of stomach of frog

c.epithelium of intestine of frog

d.dermis of skin of mammals

32. Gametophytic generation is dominant in

a.Bryophytes

b.Pteridophytes

c.Angiosperms

d.Gymnosperms

33. In rabbit, the danger signal is given by

a.external ear

b.tail

c.fore limbs

d.sound

34. Groundnut is

a.Oryza sativa

b.Cannabis sativa

c.Arachis hypogaea

d.Psidium guajava

35. The deficiency of magnesium results in

a.interveinal chlorosis

b.leaf chlorosis

c.none of these

d.wilting of plants

36. 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 haemocyanin

c.Blood of earthworm is blue in colour

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

37. 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.GTA ATG GTA GAT CTA

c.GTA ATC GAT GTA CTA

d.TAG ATG ATG GUA CUG

38. 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

39. Colouration of frog is due to

a.presence of special chromatophores below the epidermal cells

b.inidescence of skin

c.presence of melanophores

d.growth of algal colonies of skin

40. In human body, the number of bones is

a.106

b.206

c.406

d.306

41. The respiratory organs in a freshwater mussel are

a.gills

b.respiratory siphons

c.pulmonary sacs

d.book lungs

42. A posterior pituitary hormone released during parturition is

a.ACTH

b.Oxytocin

c.Vasopressin

d.ICSH

43. Alternation of generations is otherwise known as

a.Dimorphism

b.Metagenesis

c.Biogenesis

d.Epigenesis

44. Nematocysts of Hydra are important for

a.paralysing prey

b.cataching prey

c.testing the water

d.testing the food

45. Sea hare is the common name of

a.Sepia

b.Doris

c.Aplysia

d.Octopus

46. Sponges belong to the phylum

a.mastigophora

b.coelenterate

c.porifera

d.sporozoa

47. Typically all mammals have seven vertebrae except

a.man

b.sea cow

c.giraffe

d.elephant

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

a.merychippus

b.miobibbus

c.pliohippus

d.eohippus

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

a.biomass

b.biotic communities

c.organisms

d.trophic levels

50. Oil in the skin is secreted by

a.sweat glands

b.mucous glands

c.hair follicles

d.sebaceous glands

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

a.homological evidence for evolution

b.biogeographic evidence for evolution

c.palaentological evidence for evolution

d.none of these

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

a.Haemolysis

b.Haemophilia

c.Haemopoiesis

d.Haemaglutination

53. Pharyngeal gill slits are found in

a.star fish

b.cray fish

c.shark

d.cuttle fish

54. Androgens are secreted from

a.Leydig cels and adrenal cortex

b.Testis and adrenal cortex

c.Leydig cells and placenta

d.Adenohypophysis and tesis

55. Multiflagellate sperms are the characteristic of

a.Pogonatum

b.Mosses

c.Ferns

d.Riccia

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

a.sperm lysins released from the acrosome

b.flagellum

c.acrosome

d.mitochondria located at the middle piece

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

a.puberty

b.menopause

c.gestation

d.menstruation

58. Colour is perceived by

a.cornea-lens complex

b.cones in retina

c.rods in retina

d.lense only

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

a.impotency

b.cryptorchidism

c.paedogenes

d.castration

60. Which disease is caused by a nematode?

a.Amoebiasis

b.Filariasis

c.Poliomyelitis

d.Leprosy

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

a.fruit eaters

b.herbivores

c.omnivores

d.carnivores

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

a.diapause

b.diakinesis

c.didelphis

d.diapedesis

63. Germ theory of disease was proposed by

a.L. Pasteur

b.F. Jacob

c.Robert Koch

d.T. Boveri

64. The largest ovule in plant kingdom is seen is

a.Cycas circinalis

b.Both A and B

c.Cycas revolute

d.None of these

65. 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.9 cells of antheridium + 4 prothallial

d.12 cells of antheridium + 1 prothallial

66. Study of soil is called:

a.Nematology

b.Ecology

c.Pathology

d.Pedology

67. Commercial source of citric acid is:

a.Citrus fruit

b.Penicillium

c.Aspergillus

d.Yeast

68. Islets of Langerhans secrete

a.none of these

b.insulin

c.enzymes

d.glucagons

69. Dental formula of adult human being is

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

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

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

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

70. The locomotor organs of Echinoderms is called

a.setae

b.tube feet

c.pseudopodia

d.parapodia

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

a.Mitosis

b.Apomixis

c.None of these

d.Meiosis

72. Colour blidness is caused due to

a.absence of visual purple in retina

b.absence of rods in retina

c.sex-linked abnormality

d.deficiency of vitamin C

73. Infection of Ascaris usually occurs by

a.imperfectly cooked pork

b.tse tse fly

c.contaminated water and vegetables

d.mosquito bite

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

a.placentation

b.gestation

c.ovuation

d.parturition

75. What is monothecous stamen?

a.It is a sterile stamen

b.It is a stamen with one lobe

c.It is a stamen with no lobes

d.It is a stamen with many lobes

76. 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

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

a.formation of root primordia

b.formation of pollen grains

c.germination of seed

d.formation of buds

78. Malpighian bodies are found in

a.kidney of vertebrates and is involved in ultrafiltration

b.insects and involved in excretion

c.kidney of vertebrates and is involved in selective reabsorption

d.kidney of vertebrates and is involved in passive filtration

79. A mammals which never drinks water is

a.kangaroo rat

b.kangaroo

c.spiny ant eater

d.shrew

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

a.pectoral fins

b.paired fins

c.anterior fins

d.ray fins

81. Chlorophyll contains

a.Mg

b.Mn

c.K

d.Fe

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

a.epidermis

b.cornified cells

c.dermis

d.stratum germinativum

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

a.alimentary canal

b.body cavity

c.mouth

d.a gastro vascular cavity

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

a.cooperation

b.commensalism

c.mutualism

d.parasitism

85. 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

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

a.class

b.order

c.family

d.species

87. Which one of these is a cancerous disease

a.Leukaemia

b.Kwashiorkor

c.Angina

d.Malaria

88. Which of the following is commercially most valuable:

a.Heartwood

b.Spring wood

c.Autumnwood

d.Sapwood

89. The leaf lamina are generally reduced in

a.xerophytes

b.mesophytes

c.epiphytes

d.hydrophytes

90. Red rust of tea is caused by

a.Oedogonium

b.Cephaleuros

c.Pteris

d.Puccinia

91. The protein deficiency disease is known as

a.eczema

b.kwashiorkor

c.scurvy

d.mycoses

92. Phyllotaxy is the arrangement of

a.flower buds

b.veins

c.branches

d.leaves

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

a.urea and uric acid respectively

b.urea

c.uric acid and urea

d.uric acid

94. The sickle cell anaemia results in

a.polycemia

b.polio

c.polychthemia

d.leukaemia

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

a.annelids

b.sponges

c.arthropods

d.coelenterates

96. Which mosquito sits making an acute angle?

a.Anopheles

b.Aedes

c.Psorophora

d.Culex

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

a.5 litres

b.10 litres

c.2 litres

d.15 litres

98. Anticoagulant secreted by leech is

a.Haemozoin

b.Haematin

c.Heparin

d.Hirudin

99. Viruses were discovered by

a.Twort

b.Stanley

c.Iwanowiski

d.Herelle

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

a.coelenterate

b.porifera

c.protozoa

d.platyhelminthes

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

Biology MCQ Question Answers for CUET 2026

Submit a Comment Cancel reply

General

Important Days

CBSE School Lessons

Popular Pages