CUET 2024 Biology MCQs for Practice

Biology MCQ Question Answers for CUET 2024

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 2024 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.

1. Islets of Langerhans secrete

a.none of these

b.enzymes

c.insulin

d.glucagons

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

a.ray fins

b.anterior fins

c.paired fins

d.pectoral fins

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

a.pappus

b.bracts

c.corolla

d.hooks

4. 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

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

a.urea

b.uric acid

c.uric acid and urea

d.urea and uric acid respectively

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

a.A pair of testes

b.Cloaca

c.A pair of large kidneys

d.A pair of ovaries and oviducts

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

a.phyllode

b.phylloclade

c.none of these

d.cladode

8. Which of these lives in water permanently?

a.Ichthyophis

b.Frogs

c.Necturus

d.Salamander

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

a.diakinesis

b.diapause

c.diapedesis

d.didelphis

10. Which one of these is a cancerous disease

a.Kwashiorkor

b.Malaria

c.Angina

d.Leukaemia

11. 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

12. The function of cristae in a mitochondrion is

a.intake of Oxygen

b.carbon assimilation

c.electron transport and ATP synthesis

d.elimination of Carbon Dioxide

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

a.Haemolysis

b.Haemaglutination

c.Haemopoiesis

d.Haemophilia

14. 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 red and haemoglobin is dissolved in plasma

d.Blood pigment of earthworm is haemocyanin

15. 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.TAG ATG ATG GUA CUG

c.GTA ATC GAT GTA CTA

d.GUA AUC GUA GUA CUG

16. Colour is perceived by

a.lense only

b.cones in retina

c.rods in retina

d.cornea-lens complex

17. The study of migration of birds is called

a.Ornithology

b.Ecology

c.Nidology

d.Phenology

18. Syngamy means

a.fusion of gametes

b.fusion of similar spores

c.fusion of cytoplasm

d.fusion of dissimilar spores

19. Ostia are meant to

a.excrete waste products

b.admit water current

c.pass out water current

d.ingest food

20. Penicillium is a member of:

a.Phycomycetes

b.Basidiomycetes

c.Ascomyectes

d.Deuteromycetes

21. Sponges belong to the phylum

a.mastigophora

b.sporozoa

c.coelenterate

d.porifera

22. Phyllotaxy is the arrangement of

a.veins

b.branches

c.flower buds

d.leaves

23. Chlorophyll contains

a.Fe

b.Mg

c.Mn

d.K

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

a.parasitism

b.mutualism

c.cooperation

d.commensalism

25. Viruses were discovered by

a.Herelle

b.Iwanowiski

c.Twort

d.Stanley

26. Gametophytic generation is dominant in

a.Pteridophytes

b.Angiosperms

c.Bryophytes

d.Gymnosperms

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

a.sperm lysins released from the acrosome

b.flagellum

c.mitochondria located at the middle piece

d.acrosome

28. 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.anaemic hypoxia

c.lack of sufficient amount of haemoglobin

d.arterial hypoxia

29. Groundnut is

a.Psidium guajava

b.Cannabis sativa

c.Arachis hypogaea

d.Oryza sativa

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

a.Sphenodon

b.Balanoglossus

c.Limulus

d.Peripatus

31. Commercial source of citric acid is:

a.Citrus fruit

b.Penicillium

c.Yeast

d.Aspergillus

32. Trophozoites of E.histolytica reproduced by

a.autogamy

b.conjugation

c.binary fission

d.budding

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

a.merychippus

b.pliohippus

c.miobibbus

d.eohippus

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

a.None of these

b.Meiosis

c.Apomixis

d.Mitosis

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

a.alimentary canal

b.mouth

c.body cavity

d.a gastro vascular cavity

36. Multiflagellate sperms are the characteristic of

a.Mosses

b.Riccia

c.Pogonatum

d.Ferns

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

a.formation of buds

b.germination of seed

c.formation of pollen grains

d.formation of root primordia

38. 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

39. Infection of Ascaris usually occurs by

a.mosquito bite

b.contaminated water and vegetables

c.imperfectly cooked pork

d.tse tse fly

40. Malpighian bodies are found in

a.kidney of vertebrates and is involved in selective reabsorption

b.kidney of vertebrates and is involved in ultrafiltration

c.kidney of vertebrates and is involved in passive filtration

d.insects and involved in excretion

41. The deficiency of magnesium results in

a.wilting of plants

b.interveinal chlorosis

c.none of these

d.leaf chlorosis

42. A posterior pituitary hormone released during parturition is

a.Oxytocin

b.ACTH

c.Vasopressin

d.ICSH

43. Nematocysts of Hydra are important for

a.testing the food

b.testing the water

c.cataching prey

d.paralysing prey

44. Female cone is absent in

a.Pinus

b.Taxus

c.Cycas

d.None of these

45. Anticoagulant secreted by leech is

a.Heparin

b.Haemozoin

c.Hirudin

d.Haematin

46. Which is the correct food chain?

a.grass → insect → bird → snake

b.bacteria → grass → rabbit → wolf

c.grass → snake → inset → deer

d.grass → wolf → deer → buffalo

47. Among the following which is a test cross?

a.Tt x tt

b.TT x Tt

c.TT x TT

d.Tt x Tt

48. The locomotor organs of Echinoderms is called

a.parapodia

b.pseudopodia

c.setae

d.tube feet

49. The sickle cell anaemia results in

a.polycemia

b.leukaemia

c.polychthemia

d.polio

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

a.Whooping cough

b.Rabies

c.Small pox

d.Influenza

51. Sea cucumber belongs to class

a.Holothuroidea

b.Asteroidea

c.Ophiuroidea

d.Crinoidea

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

a.coelenterates

b.sponges

c.annelids

d.arthropods

53. Red rust of tea is caused by

a.Oedogonium

b.Cephaleuros

c.Puccinia

d.Pteris

54. Alternation of generations is otherwise known as

a.Dimorphism

b.Epigenesis

c.Biogenesis

d.Metagenesis

55. 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.2,1,2,2/2,1,2,2

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

56. Algae and fungi are characterised by the possession of

a.chloroplasts

b.embryo

c.multicellular jacketed sex organs

d.unicellular jacketed sex organs

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

a.E. coli

b.Rhizobium

c.Bacillus subtilis

d.None of these

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

a.gestation

b.ovuation

c.parturition

d.placentation

59. 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

60. Germ theory of disease was proposed by

a.F. Jacob

b.L. Pasteur

c.Robert Koch

d.T. Boveri

61. Adams apple in man is

a.cartilages of the trachea

b.thyroid cartilage of larynx

c.epiglottis

d.cartilage of hyoid apparatus

62. Fat soluble vitamins are

a.A, B and C

b.A, D and E

c.B, C and D

d.E, D and B

63. Pharyngeal gill slits are found in

a.star fish

b.cray fish

c.shark

d.cuttle fish

64. The respiratory organs in a freshwater mussel are

a.pulmonary sacs

b.book lungs

c.respiratory siphons

d.gills

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

a.puberty

b.menstruation

c.menopause

d.gestation

66. The locomotion of snake is helped by

a.reduced ribs

b.reduced limbs

c.ribs only

d.ribs and reduced limbs

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

a.short cut broad abdomen and anal cerci

b.long but broad abdomen and anal cerci

c.Short but broad abdomen and absence of anal styles

d.short but broad abdomen and presence of anal styles

68. The largest ovule in plant kingdom is seen is

a.Cycas revolute

b.None of these

c.Both A and B

d.Cycas circinalis

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

a.coelenterate

b.platyhelminthes

c.protozoa

d.porifera

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

a.15 litres

b.5 litres

c.2 litres

d.10 litres

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

a.stratum germinativum

b.cornified cells

c.epidermis

d.dermis

72. A motor nerve carries impulses from

a.effectors to cranial nerves

b.effectors to central nervous system

c.from cranial nerves to the effectors

d.central nervous system to the effector

73. Androgens are secreted from

a.Adenohypophysis and tesis

b.Leydig cells and placenta

c.Testis and adrenal cortex

d.Leydig cels and adrenal cortex

74. Sebaceous glands are found in

a.epithelium of intestine of frog

b.dermis of skin of mammals

c.epithelium of stomach of frog

d.epidermis of skin of mammals

75. In human body, the number of bones is

a.106

b.206

c.306

d.406

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

a.species

b.class

c.order

d.family

77. The best indicator of SO2 pollution is

a.Lichens

b.Ferns

c.Fungus

d.Algae

78. The smallest cranial nerve is

a.auditory

b.abducens

c.optic

d.olfactory

79. 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

80. In rabbit, the danger signal is given by

a.tail

b.external ear

c.sound

d.fore limbs

81. The protein deficiency disease is known as

a.mycoses

b.scurvy

c.kwashiorkor

d.eczema

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

a.trophic levels

b.biotic communities

c.organisms

d.biomass

83. Colour blidness is caused due to

a.deficiency of vitamin C

b.sex-linked abnormality

c.absence of rods in retina

d.absence of visual purple in retina

84. A mammals which never drinks water is

a.kangaroo

b.shrew

c.spiny ant eater

d.kangaroo rat

85. Which disease is caused by a nematode?

a.Amoebiasis

b.Leprosy

c.Poliomyelitis

d.Filariasis

86. Which of the following is commercially most valuable:

a.Autumnwood

b.Spring wood

c.Heartwood

d.Sapwood

87. Colouration of frog is due to

a.presence of special chromatophores below the epidermal cells

b.growth of algal colonies of skin

c.presence of melanophores

d.inidescence of skin

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

a.palaentological evidence for evolution

b.homological evidence for evolution

c.biogeographic evidence for evolution

d.none of these

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

a.4,000 kcal/day

b.2,600 kcal/day

c.3,200 kcal/day

d.1,600 kcal/day

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

a.stapes, incus, malleus

b.incus, stapes, malleus

c.malleus, stapes, incus

d.malleus, incus, stapes

91. Sea hare is the common name of

a.Aplysia

b.Octopus

c.Sepia

d.Doris

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

a.herbivores

b.omnivores

c.fruit eaters

d.carnivores

93. The 13-celled male gametophyte of Selaginella has

a.10 cells of antheridium + 3 prothallial cells

b.12 cells of antheridium + 1 prothallial

c.8 cells of antheridium + 5 prothallial cells

d.9 cells of antheridium + 4 prothallial

94. What is monothecous stamen?

a.It is a stamen with no lobes

b.It is a stamen with many lobes

c.It is a stamen with one lobe

d.It is a sterile stamen

95. Oil in the skin is secreted by

a.mucous glands

b.hair follicles

c.sweat glands

d.sebaceous glands

96. Which mosquito sits making an acute angle?

a.Culex

b.Anopheles

c.Psorophora

d.Aedes

97. Typically all mammals have seven vertebrae except

a.man

b.giraffe

c.elephant

d.sea cow

98. The leaf lamina are generally reduced in

a.mesophytes

b.xerophytes

c.hydrophytes

d.epiphytes

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

a.castration

b.impotency

c.paedogenes

d.cryptorchidism

100. Study of soil is called:

a.Nematology

b.Pathology

c.Ecology

d.Pedology

CUET 2024 Biology MCQ Question Answers – Practice MCQ Questions on Biology

Biology MCQ Question Answers for CUET 2024

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