CUET 2025 Biology MCQs for Practice

Biology MCQ Question Answers for CUET 2025

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 2025 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. The food-chain of an ecosystem can be represented as a pyramid divided into four or more

a.trophic levels

b.organisms

c.biotic communities

d.biomass

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

a.platyhelminthes

b.porifera

c.coelenterate

d.protozoa

3. The largest ovule in plant kingdom is seen is

a.Cycas revolute

b.Both A and B

c.Cycas circinalis

d.None of these

4. A mammals which never drinks water is

a.spiny ant eater

b.kangaroo rat

c.shrew

d.kangaroo

5. Which of these lives in water permanently?

a.Frogs

b.Ichthyophis

c.Necturus

d.Salamander

6. What is monothecous stamen?

a.It is a stamen with no lobes

b.It is a sterile stamen

c.It is a stamen with one lobe

d.It is a stamen with many lobes

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

a.Mitosis

b.Meiosis

c.Apomixis

d.None of these

9. Syngamy means

a.fusion of similar spores

b.fusion of cytoplasm

c.fusion of dissimilar spores

d.fusion of gametes

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

a.malleus, incus, stapes

b.incus, stapes, malleus

c.stapes, incus, malleus

d.malleus, stapes, incus

11. Islets of Langerhans secrete

a.none of these

b.glucagons

c.enzymes

d.insulin

12. Commercial source of citric acid is:

a.Aspergillus

b.Penicillium

c.Citrus fruit

d.Yeast

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

a.none of these

b.cladode

c.phyllode

d.phylloclade

14. A posterior pituitary hormone released during parturition is

a.Vasopressin

b.Oxytocin

c.ACTH

d.ICSH

15. Penicillium is a member of:

a.Basidiomycetes

b.Ascomyectes

c.Phycomycetes

d.Deuteromycetes

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

a.16

b.18

c.24

d.48

17. Adams apple in man is

a.cartilages of the trachea

b.thyroid cartilage of larynx

c.epiglottis

d.cartilage of hyoid apparatus

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

a.10 litres

b.15 litres

c.2 litres

d.5 litres

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

a.ovuation

b.gestation

c.placentation

d.parturition

20. The respiratory organs in a freshwater mussel are

a.gills

b.book lungs

c.pulmonary sacs

d.respiratory siphons

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

a.Influenza

b.Whooping cough

c.Rabies

d.Small pox

22. The function of cristae in a mitochondrion is

a.carbon assimilation

b.elimination of Carbon Dioxide

c.intake of Oxygen

d.electron transport and ATP synthesis

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

a.dermis

b.epidermis

c.cornified cells

d.stratum germinativum

24. The locomotion of snake is helped by

a.reduced ribs

b.ribs only

c.reduced limbs

d.ribs and reduced limbs

25. Red rust of tea is caused by

a.Puccinia

b.Pteris

c.Oedogonium

d.Cephaleuros

26. Sponges belong to the phylum

a.sporozoa

b.mastigophora

c.coelenterate

d.porifera

27. The protein deficiency disease is known as

a.kwashiorkor

b.eczema

c.scurvy

d.mycoses

28. Phyllotaxy is the arrangement of

a.veins

b.leaves

c.flower buds

d.branches

29. Infection of Ascaris usually occurs by

a.imperfectly cooked pork

b.tse tse fly

c.mosquito bite

d.contaminated water and vegetables

30. 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

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

a.corolla

b.hooks

c.pappus

d.bracts

32. 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

33. The leaf lamina are generally reduced in

a.xerophytes

b.hydrophytes

c.epiphytes

d.mesophytes

34. Fat soluble vitamins are

a.B, C and D

b.A, D and E

c.A, B and C

d.E, D and B

35. Which of the following statements is correct?

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

b.Blood pigment of earthworm is haemocyanin

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

d.Blood of earthworm is blue in colour

36. Ostia are meant to

a.ingest food

b.pass out water current

c.excrete waste products

d.admit water current

37. Nematocysts of Hydra are important for

a.paralysing prey

b.testing the food

c.cataching prey

d.testing the water

38. Alternation of generations is otherwise known as

a.Metagenesis

b.Dimorphism

c.Epigenesis

d.Biogenesis

39. Germ theory of disease was proposed by

a.T. Boveri

b.F. Jacob

c.Robert Koch

d.L. Pasteur

40. Which one of these is a cancerous disease

a.Kwashiorkor

b.Malaria

c.Angina

d.Leukaemia

41. Colouration of frog is due to

a.inidescence of skin

b.presence of special chromatophores below the epidermal cells

c.presence of melanophores

d.growth of algal colonies of skin

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

a.formation of buds

b.formation of pollen grains

c.formation of root primordia

d.germination of seed

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

a.Rhizobium

b.E. coli

c.Bacillus subtilis

d.None of these

44. Typically all mammals have seven vertebrae except

a.giraffe

b.man

c.sea cow

d.elephant

45. Colour blidness is caused due to

a.absence of visual purple in retina

b.deficiency of vitamin C

c.absence of rods in retina

d.sex-linked abnormality

46. 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

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

a.family

b.class

c.order

d.species

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

a.mutualism

b.parasitism

c.commensalism

d.cooperation

49. The sickle cell anaemia results in

a.polio

b.polychthemia

c.leukaemia

d.polycemia

50. Pharyngeal gill slits are found in

a.cray fish

b.shark

c.star fish

d.cuttle fish

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

a.mitochondria located at the middle piece

b.acrosome

c.sperm lysins released from the acrosome

d.flagellum

52. Which is the correct food chain?

a.grass → wolf → deer → buffalo

b.bacteria → grass → rabbit → wolf

c.grass → snake → inset → deer

d.grass → insect → bird → snake

53. Viruses were discovered by

a.Herelle

b.Twort

c.Stanley

d.Iwanowiski

54. Sea cucumber belongs to class

a.Ophiuroidea

b.Holothuroidea

c.Crinoidea

d.Asteroidea

55. The smallest cranial nerve is

a.abducens

b.auditory

c.olfactory

d.optic

56. Gametophytic generation is dominant in

a.Pteridophytes

b.Gymnosperms

c.Bryophytes

d.Angiosperms

57. The study of migration of birds is called

a.Nidology

b.Ecology

c.Ornithology

d.Phenology

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

a.Haemopoiesis

b.Haemaglutination

c.Haemophilia

d.Haemolysis

59. Which mosquito sits making an acute angle?

a.Aedes

b.Anopheles

c.Culex

d.Psorophora

60. Which of the following is commercially most valuable:

a.Autumnwood

b.Spring wood

c.Sapwood

d.Heartwood

61. The best indicator of SO2 pollution is

a.Ferns

b.Lichens

c.Fungus

d.Algae

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

a.mouth

b.body cavity

c.alimentary canal

d.a gastro vascular cavity

63. Algae and fungi are characterised by the possession of

a.unicellular jacketed sex organs

b.embryo

c.chloroplasts

d.multicellular jacketed sex organs

64. 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.none of these

d.palaentological evidence for evolution

65. The locomotor organs of Echinoderms is called

a.tube feet

b.setae

c.pseudopodia

d.parapodia

66. Androgens are secreted from

a.Leydig cells and placenta

b.Testis and adrenal cortex

c.Leydig cels and adrenal cortex

d.Adenohypophysis and tesis

67. Female cone is absent in

a.Pinus

b.None of these

c.Taxus

d.Cycas

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

a.Limulus

b.Peripatus

c.Balanoglossus

d.Sphenodon

69. Which disease is caused by a nematode?

a.Amoebiasis

b.Leprosy

c.Poliomyelitis

d.Filariasis

70. 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.evolution of terrestrial habit

d.development of sturdy eggs

71. Anticoagulant secreted by leech is

a.Haemozoin

b.Haematin

c.Heparin

d.Hirudin

72. Multiflagellate sperms are the characteristic of

a.Pogonatum

b.Riccia

c.Ferns

d.Mosses

73. Colour is perceived by

a.cornea-lens complex

b.lense only

c.cones in retina

d.rods in retina

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

a.arthropods

b.sponges

c.coelenterates

d.annelids

75. Sebaceous glands are found in

a.dermis of skin of mammals

b.epithelium of intestine of frog

c.epithelium of stomach of frog

d.epidermis of skin of mammals

76. 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.insects and involved in excretion

d.kidney of vertebrates and is involved in selective reabsorption

77. The deficiency of magnesium results in

a.none of these

b.leaf chlorosis

c.wilting of plants

d.interveinal chlorosis

78. 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

79. Sea hare is the common name of

a.Doris

b.Sepia

c.Aplysia

d.Octopus

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. 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 ATG GTA GAT CTA

b.GTA ATC GAT GTA CTA

c.TAG ATG ATG GUA CUG

d.GUA AUC GUA GUA CUG

82. Dental formula of adult human being is

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

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

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

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

83. The 13-celled male gametophyte of Selaginella has

a.12 cells of antheridium + 1 prothallial

b.8 cells of antheridium + 5 prothallial cells

c.10 cells of antheridium + 3 prothallial cells

d.9 cells of antheridium + 4 prothallial

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

a.gestation

b.puberty

c.menopause

d.menstruation

85. 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

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

a.carnivores

b.omnivores

c.herbivores

d.fruit eaters

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

a.eohippus

b.pliohippus

c.merychippus

d.miobibbus

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

a.impotency

b.paedogenes

c.castration

d.cryptorchidism

89. Groundnut is

a.Arachis hypogaea

b.Cannabis sativa

c.Oryza sativa

d.Psidium guajava

90. Kala-azar is a disease caused by

a.Trypanosma gambiense transmitted by Tsetse fly

b.Taenia solium transmitted by infected pork

c.Wuchereria bancrofti transmitted by Culex

d.Leishmania donovani transmitted by sandfly

91. Study of soil is called:

a.Pathology

b.Nematology

c.Pedology

d.Ecology

92. Sexual reproduction or two fusing gametes of Spirogyra are

a.morphologically and physiologically dissimilar

b.morphologically similar

c.morophologically dissimilar

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

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

a.Cloaca

b.A pair of large kidneys

c.A pair of testes

d.A pair of ovaries and oviducts

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

a.diapedesis

b.diapause

c.didelphis

d.diakinesis

95. Chlorophyll contains

a.Fe

b.Mg

c.K

d.Mn

96. In rabbit, the danger signal is given by

a.external ear

b.fore limbs

c.sound

d.tail

97. Oil in the skin is secreted by

a.mucous glands

b.sebaceous glands

c.sweat glands

d.hair follicles

98. In human body, the number of bones is

a.106

b.206

c.306

d.406

99. Trophozoites of E.histolytica reproduced by

a.budding

b.binary fission

c.conjugation

d.autogamy

100. Bryophyta acts as a connecting link between

a.algae and fungi

b.thallophyta and pteridophyta

c.pteridophyta and gymnosperms

d.terrestrial fungi and aquatic fungi

CUET 2025 Biology MCQ Question Answers – Practice MCQ Questions on Biology

Biology MCQ Question Answers for CUET 2025

Submit a Comment Cancel reply

General

Important Days

CBSE School Lessons

Popular Pages