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Zoology

1. In malaria, the product released by mosquito into blood that causes chill and fever, is called:

(a) Heamatin

(b) Schuffner’s dots

(c) Haemozoin

(d) Haemotoxin

Ans. (c)

2. In Amoeba, the contractile vacuole is present:

(a) Near the trailing end

(b) Near the advancing end

(c) At the middle of the body

(d) Any where inside the body

Ans. (a)

3. The trisomy for 21st chromosome is called:

(a) Down’s syndrome

(b) Turner’s syndrome

(c) Sickle cell anaemia

(d) Klinefelter’s syndrome

Ans. (a)

4. ‘Mammalian thymus’ is mainly concerned with:

(a) Regulation of body temperature

(b) Regulation of body growth

(c) Immunological functions

(d) Secretion of thyrotropin

Ans. (c)

5. Which of the following is the largest gland in an adult man?

(a) Thymus

(b) Liver

(c) Thyroid

(d) Pancreas

Ans. (b)

6. In Pheretima, septa are absent between which segments?

(a) 3/4 and 9/10

(b) 4/5 and 8/9

(c) 5/6 and 7/8

(d) 7/8 and 6/7

Ans. (a)

7. During emergency which of the following hormone is secreted?

(a) Aldosterone

(b) Thyroxine

(c) Adrenaline

(d) Calcitonin

Ans. (c)

8. In which of the following animals, respiration occurs without any respiratory organ?

(a) Frog

(b) Fish

(c) Cockroach

(d) Earthworm

Ans. (d)

9. In cockroach, larval and nymphal characters are maintained by:

(a) Ecdysone

(b) Salivary glands

(c) Parotid gland

(d) Juvenile hormone

Ans. (d)

10. Which of the following is a transparent tissue?

(a) Tendon

(b) Fibrous cartilage

(c) Hyaline cartilage

(d) All of these

Ans. (c)

11. Rh factor is present in:

(a) All vertebrates

(b) All mammals

(c) All reptiles

(d) Man and rhesus monkey only

Ans. (d)

12. In rabbit, end of a long bone is connected to another by:

(a) Tendon

(b) Ligaments

(c) Muscle

(d) Cartilage

Ans. (b)

13. Which of the following cell type is capable of giving rise to other cell types in sponges?

(a) Thesocytes

(b) Pinacocytes

(c) Cnidocytes

(d) Archaeocytes

Ans. (d)

14. Thigmotaxis is not shown by:

(a) Paramecium

(b) Amoeba

(c) Ascaris

(d) Hydra

Ans. (c)

15. Which is correctly matched?

(a) Apiculture—honey bee

(b) Pisciculture—silk moth

(c) Sericulture—fish

(d) Aquaculture—mosquito

Ans. (a)

16. Changes that allow the conversion of larva into adult, is called:

(a) Metagenesis

(b) Alternation

(c) Metamorphosis

(d) Metastasis

Ans. (c)

17. Which of the following is secreted by mast cell?

(a) Histamine

(b) Heparin

(c) Serotonin

(d) All of these

Ans. (d)

18. 5th cranial nerve of frog is called:

(a) Optic nerve

(b) Vagus

(c) Trigeminal

(d) Opthalmic

Ans. (c)

19. Animals having a built in thermostat to maintain constant body temperature are known as:

(a) biothermic

(b) poikilothermic

(c) oligothermic

(d) homeothermic

Ans. (d)

20. In earthworm, neurons are:

(a) Motor

(b) Associated

(c) Sensory

(d) All of these

Ans. (d)

21. In sex linkage, the specialty is:

(a) Atavism

(b) Criss-cross inheritance

(c) Reversion

(d) Gene flow

Ans. (b)

22. Vitamin-D is synthesized in skin by the action of sunlight on:

(a) Cholesterol

(b) 7-hydroxy cholesterol

(c) Cephalin cholesterol

(d) All of the above

Ans. (b)

23. The intermediate host of Schistosoma4s:

(a) Snail

(b) Mosquito

(c) Housefly

(d) Sheep

Ans. (a)

24. The islets of Langerhans are found in:

(a) Pancreas

(b) Stomach

(c) Liver

(d) Alimentary canal

Ans. (a)

25. In Klinefelter’s syndrome, the sex chromosome compliment is

(a) 22 A + XXY

(b) 22 A + XO

(c) 22 A + XY

(d) 22 A + XX

Ans. (a)

Botany

26. Lichen is the pioneer vegetation on which succession?

(a) Hydrosere

(b) Lithosere

(c) Psammosere

(d) Xerosere

Ans. (b)

27. Law of limiting factor was given by:

(a) Leibig

(b) Blackman

(c) Calvin

(d) Arnon

Ans. (b)

28. In Pinus, male cone bears a large number of:

(a) Ligules

(b) Anthers

(c) Micro-sporophylls

(d) Mega-sporophylls

Ans. (c)

29. Insectivorous plants grow in soil:

(a) Rich in nitrates

(b) Rich in phosphates

(c) Deficient in nitrates

(d) Rich in calcium

Ans. (c)

30. Induction of flowering by low temperature treatment is

(a) Vernalisation

(b) Cryobiology

(c) Photoperiodism

(d) Prunning

Ans. (a)

31. Decomposers are:

(a) autotrophs

(b) autoheterotrophs

(c) organotrophs

(d) heterotrophs

Ans. (c)

32. ‘Club moss’ belongs to:

(a) Algae

(b) Ptridophyta

(c) Fungi

(d) Bryophyta

Ans. (b)

33. Cleavage polyembryony occurs in:

(a) Pinus

(b) Mini Cycas

(c) Gycas

(d) Ephedra

Ans. (a)

34. Edible part of mushroom is:

(a) Basidiocarp

(b) Secondary mycelium

(c) Primary mycelium

(d) Tertiary mycelium

Ans. (a)

35. Which is the major crop in Asia?

(a) Rice

(b) Sugarcane

(c) Jowar

(d) Millet

Ans. (a)

36. Most nutritious among the following is:

(a) Wheat

(b) Maize

(c) Bajra

(d) Rice

Ans. (c)

37. Which of the following plant product is the hardest?

(a) Lignin

(b) Cutin

(c) Suberin

(d) Sporopollenin

Ans. (d)

38. ‘Ruminate endosperm’ is found in:

(a) Cruciferae

(b) Asteraceae

(c) Euphorbiaceae

(d) Annonaceae

Ans. (d)

39. Guttation is due to:

(a) Transpiration

(b) Root pressure

(c) Osmosis

(d) Diffusion

Ans. (b)

40. The following is used to get desired breed of plants.

(a) Tissue culture

(b) Genetic engineering

(c) Inbreeding

(d) Ikebana

Ans. (b)

41. For production of haploids, we culture:

(a) Shoot tip

(b) Anther

(c) Root tip

(d) None of these

Ans. (b)

42. Calyptra is derived from:

(a) Archegonia

(b) Capsule

(c) Antheridia

(d) Columella

Ans. (a)

43. Late blight of potato is caused by:

(a) Ustilago

(b) Pseudomonas

(c) Phytophthorc nfestans

(d) Colletotricum falcatum

Ans. (c)

44. ‘Clamp connection’ are observed in:

(a) Basidiomycetes

(b) Zygomycetes

(c) Ascomycetes

(d) Oomycetes

Ans. (a)

45. Leaf abscission is caused by:

(a) ABA

(b) cytokinin

(c) auxin

(d) gibberellin

Ans. (a)

46. What is the main cause for the extinction of some species in tropical forest?

(a) Deforestation

(b) Afforestation

(c) Pollution

(d) Soil erosion

Ans. (a)

47. Wilting of plant is due to:

(a) Blockage of phloem

(b) Blockage of xylem

(c) When some root and phloem are removed

(d) Tracheid is blocked

Ans. (b)

48. Most accepted theory for ascent of sap is:

(a) Capillarity theory

(b) Root pressure theory

(c) Pulsation theory

(d) Transpiration pull

Ans. (d)

49. Which enzyme converts glucose into alcohol?

(a) Zymase

(b) Diastase

(c) Invertase

(d) Lipase

Ans. (a)

50. Crop rotation helps in:

(a) Increase soil fertility

(b) Decrease soil erosion

(c) Decrease soil fertility

(d) Decrease water loss

Ans. (a)

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zoology for medical entrance Exam

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Zoology For Medical Entrance Exams Online Practice Test
Solved Paper – Zoology – BHU Medical Entrance Exam
MCQ in Zoology for Medical entrance examination Zoology
1. The first heart sound is produced when:
(a) Systole begins
(b) Diastole begins
(c) Semilunar valve closed
(d) Bicuspid and tricuspid valve close quickly
Ans. (d)

2. The sequence of ear ossicles of vertebrates starting from tympanum is:
(a) Malleus, incus and stapes
(b) Stapes, incus and malleus
(c) Incus, stapes and malleus
(d) Incus, malleus and stapes
Ans. (a)

3. At high altitude, the RBCs in human blood:
(a) Increase in number
(b) Decrease in number
(c) Increase in size
(d) Decrease in size
Ans. (a)

4. Which of the following changes for man in the course of evolution, is probably useless?
(a) Development of opposable thumb
(b) Loss of tail
(c) Development of being erect
(d) Development of cranial capacity
Ans. (b)

5. The endothelium of blood vessel is composed of:
(a) Squamous epithelium
(b) Cuboids epithelium
(c) Columnar epithelium
(d) Ciliated epithelium
Ans. (a)

6. Bilirubin and bilivirdin are:
(a) Bile salts
(b) Bile pigments
(c) Bile juices
(d) Bile enzymes
Ans. (b)

7. Homoeothermic animals are
(a) Pigeon and toad
(b) Pigeon and rabbit
(c) Toad and rabbit
(d) Lizard and pigeon
Ans. (b)

8. In frog, mesorchium is a thin fold of membrane extending between
(a) Two testes
(c) Liver to testes
(b) Two kidneys
(d) Kidney to testes
Ans. (a)

9. Piercing and sticking mouth parts are found in:
(a) locust
(b) Butterfly
(c) Mosquito
(d) House fly
Ans. (c)

10. Monogamic ratite bird is
(a) Ostrich
(b) Pigeon
(c) Emu
(d) Kite
Ans. (c)

11. Primary consumer of a biotic community is:
(a) Plant
(b) Herbivore
(c) Carnivore
(d) Decomposer
Ans. (b)

12. Which of the following teeth are lophodont?
(a) Premolar and molar
(b) Premolar and incisor
(c) Incisor and canine
(d) Canine and premolar
Ans. (a)

13. Heparin is formed by
(a) Kidney cells
(c) Liver cells
(b) Blood cells
(d) Bone marrow
Ans. (c)

14. Characteristic feature of fishes is
(a) Tail and venous heart
(b) Venous heart and gills
(c) Epidermal scales and tail
(d) Epidermal scales and gills ‘
Ans. (b)

15. The term protoplasm was given by:
(a) Fischer
(b) Purkinje
(c) Dujardin
(d) Brown
Ans. (b)

16. The oxidative breakdown of respiratory substrates with the help of oxygen is termed as:
(a) Fermentation
(b) Combustion
(c) Anaerobic respiration
(d) Aerobic respiration
Ans. (d)

17. Excretion in Amoeba occurs through:
(a) Rhizopodia
(b) Contractile vacuole
(c) Plasma membrane
(d) Mitochondria
Ans. (c)

18. Fats and oils are:
(a) Glycerol and trialcohols
(b) Glycerol and essential oils
(c) Esters and aromatic alcohol
(d) Triglycerides of long chain of fatty acid
Ans. (d)

19. Cytochrome is found in:
(a) Mitochondrial matrix
(b) Outer membrane of mitochondria.
(c) Cristae of mitochondria
(d) Per mitochondrial space
Ans. (c)

20. Formation of bivalent, during, meiosis, occurs in:
(a) Zygotene
(b) Diplotene
(c) Leptotene
(d) Pachytene
Ans. (a)

21. A non-parasitic animal is:
(a) Plasmodium
(b) Leech
(c) Tape worm
(d) Sea anemone
Ans. (d)

22. The nuclease enzyme begins its attack from free end of a polynucleotide is
(a) Kinase
(b) Exonuclease
(c) Polymerase
(d) Endonuclease
Ans. (b)

23. The opening of spermathecae in earthworm are found in:
(a) 6, 7, 8 and 9 segments ventrolaterally
(b) 5, 6, 7 and 8 segments ventrally
(c) 10, 11, 12 and 13 segments laterally
(d) 4, 5, 6 and 7 segments dorsally
Ans. (a)

24. Glaucoma disease occurs:
(a) Due to uneven curvature f cornea
(b) Opaque lenses
(c) Lens destroyed
(d) Schema’s canal is blocked
Ans. (d)

25. Ichthyophis is a member of:
(a) Reptilian
(b) Amphibian
(c) Ayes
(d) Mammals
Ans. (b)

26. Hermit crab and sea anemone relationship is:
(a) Mutualism
(b) Parasitism
(c) Commensalisms
(d) Symbiotism
Ans. (c)

27 Mammalian kidneys is:
(a) Pronephros
(b) Epinephros
(c) Mesonephros
(d) Metanephros
Ans. (d)

28. The function of epiphysis is:
(a) Protect the bone
(b) Growth of bone
(c) Check the growth of bone
(d) all of the above
Ans. (b)

29. A child having blood group ‘O’ does not have the parents with blood group:
(a) O, O
(b) B, A
(c) AB, O
(d) AB, AB
Ans. (d)

30. Cockroach and other insects have blood which
(a) Resembles human blood in colour
(b) Has RBCs
(c) Circulates through arteries and veins
(d) Circulates through an open system
Ans. (d)

31. Albinos have been reported in
(a) White race
(b) Black race
(c) Both (a) and (b)
(d) None of these
Ans. (c)

32. Cranial capacity of Australopithecus was
(a) 350—450 cm3
(b) 650—700 cm3
(c) 1050—1150 cm3
(d) 1400—1450 cm3
Ans. (a)

33. Exoskeleton/scales are absent in
(a) Fishes
(b) Retiles
(c) Ichthyophis
(d) Rana tigrina
Ans. (d)

34. Which law of evolution states that “warm-blooded” mammals of hot and humid areas have abundant melanin pigment?
(a) Dollo’s law
(b) Gloger’s law
(c) Cope’s law
(d) Gause’s law
Ans. (b)

35. Reason of death of a patient of cobra-bite is
(a) Destruction of RBC5
(b) Inactivation of nerves
(c) Permanent contraction of muscles
(d) None of the above
Ans. (b)

36. The most important component of contraceptive pills is
(a) Progesterone
(b) Growth hormone
(c) Thyroxine
(d) Luteinizing hormone
Ans. (a)

37. Yolk plug forms during
(a) morula-formation
(b) blastula-formation
(c) Gastrula
(d) Neurulation
Ans. (c)

38. In which of the following only cone cells are found?
(a) Fovea centralis
(b) Retina
(c) Fossa ovalis
(d) Blind spots
Ans. (a)

39. Hepatic portal system collects blood from
(a) Liver
(b) Lungs
(c) Kidney
(d) Alimentary canal
Ans. (d)

40. The first digit of the forearm is termed
(a) Pollex
(b) Hallux
(c) Pollux
(d) None of these
Ans. (a)

41. Bidder’s canal is meant for passage of
(a) Ova
(b) Urine
(c) Sperms
(d) All of these
Ans. (c)

42. Striped muscle fibre has
(a) One nucleus
(b) Two nucleus
(c) Many nuclei
(d) No nuclei
Ans. (c)

43. Billroth’s cords are characteristic of
(a) spinal cord
(b) Notochord
(c) Nerve cord
(d) Spleen
Ans. (d)

44. Nuhn’s glands are present in
(a) Intestine
(b) Tongue
(c) Skin
(d) Stomach
Ans. (b)

45. Amylopsin acts upon
(a) Polysaccharide in any medium
(b) Polysaccharide in acidic medium
(c) Polysaccharide in alkaline medium
(d) Polypeptides
Ans. (c)

46. Hypoxia is the condition in which less oxygen becomes available to the tissues. This may be due to
(a) Lesser oxygen in the atmosphere
(b) More CO in air
(c) Less RBCs in blood
(d) all of the above
Ans. (d)

47. Carotid labyrinth contains
(a) Olfactoreceptors
(b) Baroreceptors
(c) Chemoreceptors
(d) Phonoreceptors
Ans. (b)

48. Juxtaglomerular cells of renal cortex synthesizes a hormone called
(a) ADH
(b) Oxytoxin
(c) Renin
(d) Urochrome
Ans. (c)

49. Corpora striata occur in
(a) cerebrum
(b) Cerebellum
(c) Medulla
(d) Diencephalons
Ans. (a)

50. A point mutation comprising the substitution of purine by pyramidine is called
(a) Deletion
(b) Transition
(c) Transversion
(d) Translocation
Ans. (c)

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pgt biology and Botany

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Free Biology Questions

Botany

1. Morphogenesis in plants is controlled by

(1) Auxins

(2) Gibberellins

(3) Cytokinins

(4) Abscisic acid

Ans. (4)

2. The non-auxin herbicide which is used to kill broad leaved plants in grass lawns is:

(a) Diquat

(b) Dinitrophenol

(c) Dalapon

(d) Dicamba

Ans. (c)

3. In tissue culture:

(a) Normal cells behave as cancer cell.

(b) Normal cells behave as normal cells

(C) Cancer cells behave as normal cells

(d) Cancer cells form callus

Ans. (a)

4. The plants of Cladophora crispata occur as:

(a) Epiphyte

(b) Endophyte

(c) Endozoic

(d) Epizoic

Ans. (d)

5. Which one of the following ratio is constant DNA of a species?

(a) A+T/G+C

(b) A+G/T+C

(c) A+C/T+G

(d) A+U/T+G

Ans. (a)

6. Mycorrhiza is:

(a) Association of root and bacteria

(b) Association of root and fungi

(c) Association of root and algae

(d) Parasitic root

Ans. (b)

Direction: In the following questions more than one of the answers given may be correct. Select the correct answers and mark it according to the code.

Codes:

(1) 1, 2 and 3 are correct

(2) 1 and 2 are correct

(3) 2 and 4 are correct ‘

(4) 1 and 3 are correct

7. Pollen tube of Cycas acts

(1) As an agent for carrying male. Gamete to the egg

(2) As a haustorium

(3) As endosperm

(4) As female cone

Ans. (2)

8. Which of the following conditions are necessary for the growth of the moulds, Mucor or Penicillium?

(1) Warmth

(2) Carbohydrate

(3) Water

(4) Light

Ans. (1)

9. Which of the following characteristics are associated with halophytes plants?

(1) Presence of pneumatophores

(2) Leaves and stem have hairy and waxy covering

(3) Shows viviparous germination

(4) Leaves show Heterophilly

Ans. (4)

10. The characteristic feature of leghaemoglobin are

(1) It is a source of energy

(2) It is a pinkish colour pigment found in nodules

(3) Activated by the presence of Mg²⁺ ions

(4) It protects nitrogen fixing enzyme nitrogenase from oxygen

Ans. (3)

11. Cyathium is characterized by

(1) Single female flower surrounded by many male flowers

(2) As involucres of bracts enclosing all the flowers

(3) Fleshy inflorescence axis with a pear shaped cavity inside

(4) Single male flower surrounded by many female flowers

Ans. (2)

12. Parietal placentation is found in the members of

(1) Family Cucurbitaceae

(2) Family Solanaceae

(3) Family Brassicaceae

(4) Family leguminosae

Ans. (4)

13. Which of the following is true regarding Guttation?

(1) Occurs through stomata

(2) Occurs through hydathodes

(3) Loss of pure water

(4) Occurs mostly during night and early morning

Ans. (3)

14. Which of the following statements are true for complementary genes?

(1) Both the genes interact to produce a complementary new trait

(2) Pair of nonallelic genes

(3) The F₂ ratio is generally 9: 7

(4) The F₂ ratio is generally 9: 3: 4

Ans. (1)

15. Coenzymes

(1) Act as a donor of groups of atoms added to the substrate

(2) Act as an acceptor of groups of atoms removed from the substrate

(3) Can not be easily separated from apoenzyme

(4) Do not act as prosthetic group

Ans. (2)

16. Suckers are

(1) Formed from the internodes of underground stem

(2) Formed from the node of underground stem

(3) Roots which are formed from the upper portion of nodes

(4) Roots which are formed from the lower portion of nodes

Ans. (3)

17. Non-cyclic photophosphorylation produces

(1) NADPH

(2) ATP and O₂

(3) ATP only

(4) O₂ only

Ans. (2)

18. C₄ pathway occurs

(1) Only in monocots

(3) In most of the dicats

(2) In monocots

(4) In few dicots

Ans. (3)

19. Link between glycolysis, Krebs’ cycle and ?-oxidation of fatty acid or carbohydrate and fat metabolism is

(1) Acetyl CoA

(2) A compound formed by oxidative de-carboxylation

(3) A 2-carbon compound

(4) oxaloacetic acid

Ans. (1)

20. The enzymes taking part in recombinant DNA technology are

(1) Restriction Endonuclease

(2) Ligase

(3) Reverse transcriptase

(4) Phosphates

Ans. (2)

21. The mode of asexual reproduction in bacteria are

(1) Formation of gametes

(2) Endospore formation

(3) Conjugation

(4) Zoospores formation

Ans. (3)

22. Acid rain is caused by

(1) Sulphur dioxide

(2) Hydrogen chloride

(3) Nitrogen oxides

(4) Phosphates

Ans. (1)

23. Censer mechanism is found in

(1) Aristolochia

(2) Antlrrhinum

(3) Papaver

(4) Cletnatis

Ans. (1)

24. Aerenchyma is present in which of the following plants?

(1) Neptunia

(2) Potamogeton

(3) Bryophyllum

(4) Vallesneria

Ans. (3)

25. One internodes long phylloclade is found in

(1) Ruscus

(2) Opuntia

(3) Asparagus

(4) Calotropis

Ans. (4)

Zoology

1. Lymphoid tissue is found in:

(a) Thymus

(b) Tonsils

(c) Lymph nodes

(d) All of these

Ans. (d)

2. Most widely used bioweapon is:

(a) Bacillus subtilis

(b) Pseudomonas putida

(c) Bacillus anthracis

(d) None of the above

Ans. (c)

3. The vitamin which is essential for blood clotting is

(a) Vitamin-A

(b) Vitamin-B

(c) Vitamin-C

(d) Vitamin-K

Ans. (d)

4. The female genital pore of Pheretima posthuma located upon the segment?

(a) 14^th

(b) 16^th

(c) 18^th

(d) 15^th

Ans. (a)

5. Polyp phase is absent in:

(a) Hydra

(b) Aurelia

(c) Physalia

(d) Obelia

Ans. (b)

6. In frog heart, there are cardiac muscles which consist of fibres called

(a) Purkinje fibres

(b) Myonemes

(c) Telodendria

(d) Columnae camae

Ans. (a)

7. Malpighian tubules are:

(a) Excretory organs of insects

(b) Excretory organs of frog

(c) Respiratory organs of insects

(d) Endocrine glands of insects

Ans. (a)

8. Pacemaker is:

(a) AV node

(b) SA node

(c) Bundle of His

(d) Purkinje fibres

Ans. (b)

9. LH and FSH are collectively called:

(a) Oxytocin

(b) Somatotrophins

(c) Luteotrophic

(d) Gonadotrophins

Ans. (d)

10. Who is known as “father of Endocrinology”?

(a) R.H. Whittaker

(b) Pasteur

(c) Einthoven

(d) Thomas Addison

Ans. (d)

11. Which of the following provides most evident proof of evolution?

(a) Fossils

(b) Morphology

(c) Embryo

(d) Vestigial organs

Ans. (a)

12. In Mollusca, eye is present over a stalk, called:

(a) Ostractum

(b) Operculum

(c) Ommatophores

(d) Osphradium

Ans. (c)

13. Among the following, colonial insects are:

(a) Locusts

(b) Mosquitoes

(c) White ants

(d) Bed bug

Ans. (c)

14. In Ascaris, the coelom is:

(a) Schizocoelom

(b) Pseudocoelom

(c) True coelom

(d) Haemocoelom

Ans. (b)

15. ‘Turbellarians’ are free living:

(a) Nematodes

(b) Cestodes

(c) Flat worms

(d) Trematodes

Ans. (c)

16. The characteristic larva of phylum ‘Coelenterata’ is:

(a) Planula

(b) Cysticercus

(c) Rhabdiform

(d) Wriggler

Ans. (a)

17. Podocytes are the cells, present in:

(a) Cortex of nephron

(b) Inner wall of Bowman4s capsule

(c) Outer wall of Bowman s capsule

(d) Wall of glomerular capillaries

Ans. (b)

18. In rabbit, head of epididymis present at the head of the testis is called:

(a) Vas deferens

(b) Cauda epididymis

(c) Gubernaculum

(d) Caput epididymis

Ans. (d)

19. Tendons and ligaments are specialized types of:

(a) Nervous tissue

(b) Muscular tissue

(c) Epithelial tissue

(d) Fibrous connective tissue

Ans. (d)

20. In blood, CO₂ is transported majorly as:

(a) Sodium carbonate

(b) Carboxyhaemoglobin

(c) Bicarbonate

(d) CO₂ as such

Ans. (c)

21. Animals undergoes inactive stage during winter, is known as

(a) Aestivation

(b) Hibernation

(c) Adaptation

(d) Acclimatization

Ans. (b)

22. Kupffer cells are present in:

(a) Liver

(b) Small intestine

(c) Pancreas

(d) Thyroid gland

Ans. (a)

23. The embryo at 16 celled stages is known as:

(a) Morula

(b) Gastrula

(c) Blastula

(d) Blastomere

Ans. (a)

24. Contractile vacuole in protozoan Amoeba is meant for:

(a) Respiration

(b) Excretion

(c) Locomotion

(d) Osmoregulation

Ans. (d)

25. In which of the following, putrefying bacteria is present?

(a) Intestine

(b) Colon

(c) Stomach

(d) Liver

Ans. (a)

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