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. Which one of these is a cancerous disease

a.Malaria

b.Angina

c.Kwashiorkor

d.Leukaemia

2. The deficiency of magnesium results in

a.none of these

b.interveinal chlorosis

c.leaf chlorosis

d.wilting of plants

3. Phyllotaxy is the arrangement of

a.branches

b.leaves

c.veins

d.flower buds

4. 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.GUA AUC GUA GUA CUG

d.GTA ATC GAT GTA CTA

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

a.castration

b.impotency

c.cryptorchidism

d.paedogenes

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

a.parturition

b.placentation

c.ovuation

d.gestation

7. The function of cristae in a mitochondrion is

a.elimination of Carbon Dioxide

b.electron transport and ATP synthesis

c.intake of Oxygen

d.carbon assimilation

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

a.change over to herbivorous feeding

b.occurrence of metamoophosis on amphibian

c.evolution of terrestrial habit

d.development of sturdy eggs

10. Penicillium is a member of:

a.Ascomyectes

b.Basidiomycetes

c.Deuteromycetes

d.Phycomycetes

11. Viruses were discovered by

a.Twort

b.Herelle

c.Iwanowiski

d.Stanley

12. Islets of Langerhans secrete

a.enzymes

b.glucagons

c.none of these

d.insulin

13. Germ theory of disease was proposed by

a.L. Pasteur

b.Robert Koch

c.T. Boveri

d.F. Jacob

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

a.flagellum

b.mitochondria located at the middle piece

c.sperm lysins released from the acrosome

d.acrosome

15. Trophozoites of E.histolytica reproduced by

a.autogamy

b.budding

c.conjugation

d.binary fission

16. The respiratory organs in a freshwater mussel are

a.pulmonary sacs

b.respiratory siphons

c.gills

d.book lungs

17. 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

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

a.48

b.18

c.16

d.24

19. Sexual reproduction or two fusing gametes of Spirogyra are

a.morphologically and physiologically dissimilar

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

c.morphologically similar

d.morophologically dissimilar

20. A motor nerve carries impulses from

a.effectors to central nervous system

b.central nervous system to the effector

c.from cranial nerves to the effectors

d.effectors to cranial nerves

21. Which of these lives in water permanently?

a.Salamander

b.Frogs

c.Necturus

d.Ichthyophis

22. Anticoagulant secreted by leech is

a.Hirudin

b.Haemozoin

c.Heparin

d.Haematin

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

a.annelids

b.arthropods

c.sponges

d.coelenterates

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

a.uric acid and urea

b.urea

c.urea and uric acid respectively

d.uric acid

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

a.merychippus

b.miobibbus

c.eohippus

d.pliohippus

26. Algae and fungi are characterised by the possession of

a.multicellular jacketed sex organs

b.embryo

c.chloroplasts

d.unicellular jacketed sex organs

27. In rabbit, the danger signal is given by

a.tail

b.sound

c.fore limbs

d.external ear

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

a.pappus

b.corolla

c.bracts

d.hooks

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

a.gestation

b.puberty

c.menopause

d.menstruation

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

a.diapedesis

b.diakinesis

c.diapause

d.didelphis

31. What is monothecous stamen?

a.It is a stamen with one lobe

b.It is a stamen with many lobes

c.It is a sterile stamen

d.It is a stamen with no lobes

32. Gametophytic generation is dominant in

a.Angiosperms

b.Bryophytes

c.Pteridophytes

d.Gymnosperms

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

a.malleus, stapes, incus

b.stapes, incus, malleus

c.malleus, incus, stapes

d.incus, stapes, malleus

34. The smallest cranial nerve is

a.abducens

b.optic

c.olfactory

d.auditory

35. Multiflagellate sperms are the characteristic of

a.Riccia

b.Pogonatum

c.Ferns

d.Mosses

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

a.body cavity

b.mouth

c.a gastro vascular cavity

d.alimentary canal

37. Red rust of tea is caused by

a.Pteris

b.Cephaleuros

c.Oedogonium

d.Puccinia

38. Sea hare is the common name of

a.Sepia

b.Doris

c.Octopus

d.Aplysia

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

a.biotic communities

b.trophic levels

c.biomass

d.organisms

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

a.formation of root primordia

b.germination of seed

c.formation of pollen grains

d.formation of buds

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

a.Balanoglossus

b.Limulus

c.Sphenodon

d.Peripatus

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

a.15 litres

b.5 litres

c.2 litres

d.10 litres

44. The sickle cell anaemia results in

a.polycemia

b.polychthemia

c.polio

d.leukaemia

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

a.Bacillus subtilis

b.None of these

c.E. coli

d.Rhizobium

46. Alternation of generations is otherwise known as

a.Biogenesis

b.Dimorphism

c.Metagenesis

d.Epigenesis

47. A mammals which never drinks water is

a.spiny ant eater

b.kangaroo rat

c.shrew

d.kangaroo

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

a.mutualism

b.cooperation

c.commensalism

d.parasitism

49. 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

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

a.A pair of testes

b.A pair of large kidneys

c.A pair of ovaries and oviducts

d.Cloaca

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

a.Haemaglutination

b.Haemopoiesis

c.Haemolysis

d.Haemophilia

52. Colouration of frog is due to

a.presence of special chromatophores below the epidermal cells

b.growth of algal colonies of skin

c.inidescence of skin

d.presence of melanophores

53. Groundnut is

a.Psidium guajava

b.Arachis hypogaea

c.Cannabis sativa

d.Oryza sativa

54. Kala-azar is a disease caused by

a.Taenia solium transmitted by infected pork

b.Wuchereria bancrofti transmitted by Culex

c.Leishmania donovani transmitted by sandfly

d.Trypanosma gambiense transmitted by Tsetse fly

55. The locomotor organs of Echinoderms is called

a.parapodia

b.setae

c.pseudopodia

d.tube feet

56. Adams apple in man is

a.thyroid cartilage of larynx

b.epiglottis

c.cartilage of hyoid apparatus

d.cartilages of the trachea

57. Which of the following is commercially most valuable:

a.Spring wood

b.Autumnwood

c.Sapwood

d.Heartwood

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

a.Influenza

b.Rabies

c.Small pox

d.Whooping cough

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

a.homological evidence for evolution

b.none of these

c.biogeographic evidence for evolution

d.palaentological evidence for evolution

60. 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

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

a.fruit eaters

b.herbivores

c.carnivores

d.omnivores

62. Bryophyta acts as a connecting link between

a.pteridophyta and gymnosperms

b.algae and fungi

c.thallophyta and pteridophyta

d.terrestrial fungi and aquatic fungi

63. Ostia are meant to

a.ingest food

b.admit water current

c.excrete waste products

d.pass out water current

64. The best indicator of SO2 pollution is

a.Lichens

b.Fungus

c.Ferns

d.Algae

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

a.Mitosis

b.Apomixis

c.None of these

d.Meiosis

66. Nematocysts of Hydra are important for

a.testing the food

b.testing the water

c.cataching prey

d.paralysing prey

67. Sea cucumber belongs to class

a.Asteroidea

b.Crinoidea

c.Holothuroidea

d.Ophiuroidea

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

a.porifera

b.protozoa

c.platyhelminthes

d.coelenterate

69. Which of the following statements is correct?

a.Blood of earthworm is blue in colour

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

c.Blood pigment of earthworm is haemocyanin

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

70. The leaf lamina are generally reduced in

a.hydrophytes

b.xerophytes

c.epiphytes

d.mesophytes

71. The 13-celled male gametophyte of Selaginella has

a.9 cells of antheridium + 4 prothallial

b.12 cells of antheridium + 1 prothallial

c.8 cells of antheridium + 5 prothallial cells

d.10 cells of antheridium + 3 prothallial cells

72. Malpighian bodies are found in

a.kidney of vertebrates and is involved in selective reabsorption

b.kidney of vertebrates and is involved in passive filtration

c.kidney of vertebrates and is involved in ultrafiltration

d.insects and involved in excretion

73. Sponges belong to the phylum

a.coelenterate

b.porifera

c.sporozoa

d.mastigophora

74. Commercial source of citric acid is:

a.Aspergillus

b.Yeast

c.Penicillium

d.Citrus fruit

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

a.dermis

b.cornified cells

c.epidermis

d.stratum germinativum

76. The study of migration of birds is called

a.Nidology

b.Phenology

c.Ornithology

d.Ecology

77. Which disease is caused by a nematode?

a.Poliomyelitis

b.Leprosy

c.Amoebiasis

d.Filariasis

78. The largest ovule in plant kingdom is seen is

a.Cycas circinalis

b.Cycas revolute

c.None of these

d.Both A and B

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

a.paired fins

b.pectoral fins

c.anterior fins

d.ray fins

80. The locomotion of snake is helped by

a.ribs only

b.reduced ribs

c.ribs and reduced limbs

d.reduced limbs

81. Chlorophyll contains

a.K

b.Mg

c.Fe

d.Mn

82. Oil in the skin is secreted by

a.hair follicles

b.sweat glands

c.sebaceous glands

d.mucous glands

83. Female cone is absent in

a.Pinus

b.None of these

c.Cycas

d.Taxus

84. Which mosquito sits making an acute angle?

a.Anopheles

b.Aedes

c.Culex

d.Psorophora

85. The protein deficiency disease is known as

a.kwashiorkor

b.mycoses

c.eczema

d.scurvy

86. Syngamy means

a.fusion of gametes

b.fusion of dissimilar spores

c.fusion of similar spores

d.fusion of cytoplasm

87. Fat soluble vitamins are

a.A, D and E

b.B, C and D

c.A, B and C

d.E, D and B

88. Sebaceous glands are found in

a.epithelium of stomach of frog

b.epithelium of intestine of frog

c.dermis of skin of mammals

d.epidermis of skin of mammals

89. Dental formula of adult human being is

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

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

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

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

90. Pharyngeal gill slits are found in

a.cray fish

b.shark

c.star fish

d.cuttle fish

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

a.species

b.class

c.family

d.order

92. Typically all mammals have seven vertebrae except

a.elephant

b.man

c.sea cow

d.giraffe

93. Infection of Ascaris usually occurs by

a.tse tse fly

b.contaminated water and vegetables

c.imperfectly cooked pork

d.mosquito bite

94. Colour is perceived by

a.lense only

b.cornea-lens complex

c.cones in retina

d.rods in retina

95. In human body, the number of bones is

a.206

b.106

c.306

d.406

96. Study of soil is called:

a.Nematology

b.Ecology

c.Pathology

d.Pedology

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

a.none of these

b.phylloclade

c.cladode

d.phyllode

98. 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.lack of sufficient amount of haemoglobin

c.arterial hypoxia

d.anaemic hypoxia

99. Androgens are secreted from

a.Leydig cells and placenta

b.Testis and adrenal cortex

c.Leydig cels and adrenal cortex

d.Adenohypophysis and tesis

100. A posterior pituitary hormone released during parturition is

a.ACTH

b.Vasopressin

c.Oxytocin

d.ICSH

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

Biology MCQ Question Answers for CUET 2024

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