Zoology · Sample Paper 3

General instructions

Section A · Class 11 syllabus

1. Question 14 marks

   Animals with a true coelom lined by mesoderm are called

   1. A.acoelomates
   2. B.pseudocoelomates
   3. C.coelomates
   4. D.diploblastic
2. Question 24 marks

   Which phylum is known for radial symmetry and a body with pores (ostia)?

   1. A.Porifera
   2. B.Annelida
   3. C.Mollusca
   4. D.Chordata
3. Question 34 marks

   Malpighian tubules for excretion are found in

   1. A.annelids
   2. B.insects
   3. C.molluscs
   4. D.fishes
4. Question 44 marks

   Which fish has a cartilaginous endoskeleton?

   1. A.Rohu
   2. B.Catla
   3. C.Scoliodon (dogfish)
   4. D.Labeo
5. Question 54 marks

   Areolar tissue is a type of

   1. A.epithelial tissue
   2. B.loose connective tissue
   3. C.muscular tissue
   4. D.nervous tissue
6. Question 64 marks

   Adult frogs excrete nitrogenous waste mainly as

   1. A.ammonia
   2. B.urea
   3. C.uric acid
   4. D.guanine
7. Question 74 marks

   Which is a saturated fatty acid?

   1. A.oleic acid
   2. B.palmitic acid
   3. C.linoleic acid
   4. D.arachidonic acid
8. Question 84 marks

   Enzymes that join two molecules using ATP belong to the class

   1. A.hydrolases
   2. B.lyases
   3. C.ligases
   4. D.isomerases
9. Question 94 marks

   The most abundant chemical in living organisms is

   1. A.protein
   2. B.water
   3. C.lipid
   4. D.carbohydrate
10. Question 104 marks

    The partial pressure of oxygen in alveolar air is about

    1. A.40 mm Hg
    2. B.104 mm Hg
    3. C.159 mm Hg
    4. D.45 mm Hg
11. Question 114 marks

    Asthma is caused by

    1. A.inflammation of bronchi and bronchioles
    2. B.damage to alveoli
    3. C.infection of the pleura only
    4. D.low haemoglobin
12. Question 124 marks

    Tidal volume in a healthy adult is about

    1. A.500 mL
    2. B.1200 mL
    3. C.3000 mL
    4. D.100 mL
13. Question 134 marks

    The normal cardiac output of an adult is about

    1. A.1 L/min
    2. B.5 L/min
    3. C.15 L/min
    4. D.50 L/min
14. Question 144 marks

    The valve between the left atrium and left ventricle is the

    1. A.tricuspid
    2. B.bicuspid (mitral)
    3. C.semilunar
    4. D.aortic
15. Question 154 marks

    Which blood group is the universal recipient?

    1. A.A
    2. B.B
    3. C.AB
    4. D.O
16. Question 164 marks

    The urine of a person suffering from diabetes insipidus is

    1. A.concentrated
    2. B.large in volume and dilute
    3. C.with glucose
    4. D.with blood
17. Question 174 marks

    Atrial natriuretic factor causes

    1. A.vasoconstriction
    2. B.vasodilation and lower blood pressure
    3. C.increased Na⁺ reabsorption
    4. D.ADH release
18. Question 184 marks

    The ascending limb of the loop of Henle is

    1. A.permeable to water
    2. B.impermeable to water but permeable to electrolytes
    3. C.impermeable to everything
    4. D.site of glucose reabsorption
19. Question 194 marks

    The protein that forms the thick filaments of muscle is

    1. A.actin
    2. B.myosin
    3. C.troponin
    4. D.tropomyosin
20. Question 204 marks

    The number of bones in the human skull is

    1. A.22
    2. B.29
    3. C.33
    4. D.12
21. Question 214 marks

    Myasthenia gravis is an

    1. A.autoimmune disorder affecting the neuromuscular junction
    2. B.infection of muscles
    3. C.inherited bone disease
    4. D.vitamin deficiency
22. Question 224 marks

    The 'blind spot' of the eye has

    1. A.only rods
    2. B.only cones
    3. C.no photoreceptors
    4. D.maximum cones
23. Question 234 marks

    The part of the inner ear concerned with hearing is the

    1. A.semicircular canals
    2. B.cochlea
    3. C.utricle
    4. D.saccule
24. Question 244 marks

    Melatonin is secreted by the

    1. A.pituitary
    2. B.pineal gland
    3. C.thyroid
    4. D.adrenal
25. Question 254 marks

    Hypersecretion of growth hormone in adults causes

    1. A.dwarfism
    2. B.acromegaly
    3. C.cretinism
    4. D.goitre
26. Question 264 marks

    Which hormone is a peptide hormone?

    1. A.cortisol
    2. B.insulin
    3. C.testosterone
    4. D.oestrogen

Section B · Class 12 syllabus

1. Question 274 marks

   The hormone that causes the release of an ovum (ovulation) is

   1. A.FSH
   2. B.LH surge
   3. C.progesterone
   4. D.prolactin
2. Question 284 marks

   The inner cell mass of the blastocyst develops into the

   1. A.placenta
   2. B.embryo
   3. C.chorion only
   4. D.amnion only
3. Question 294 marks

   Leydig cells are found in the

   1. A.ovary
   2. B.interstitial spaces of the testis
   3. C.epididymis
   4. D.prostate
4. Question 304 marks

   Parturition is induced by

   1. A.prolactin
   2. B.oxytocin
   3. C.relaxin only
   4. D.FSH
5. Question 314 marks

   Which of these is a sexually transmitted infection caused by bacteria?

   1. A.genital herpes
   2. B.gonorrhoea
   3. C.hepatitis B
   4. D.AIDS
6. Question 324 marks

   In GIFT,

   1. A.the zygote is placed in the fallopian tube
   2. B.the ovum and sperm (gametes) are transferred into the fallopian tube
   3. C.the embryo is placed in the uterus
   4. D.sperm is injected into the ovum
7. Question 334 marks

   The first life form on Earth is believed to have arisen about

   1. A.4 billion years ago
   2. B.500 million years ago
   3. C.65 million years ago
   4. D.1 million years ago
8. Question 344 marks

   Analogous organs indicate

   1. A.divergent evolution
   2. B.convergent evolution
   3. C.common ancestry
   4. D.vestigiality
9. Question 354 marks

   The Hardy–Weinberg equation for two alleles is

   1. A.$p+q=2$
   2. B.$p^2+2pq+q^2=1$
   3. C.$p^2+q^2=1$
   4. D.$2p+2q=1$
10. Question 364 marks

    Which part of the body is affected by amoebiasis?

    1. A.lungs
    2. B.large intestine
    3. C.liver only
    4. D.brain
11. Question 374 marks

    Interferons are secreted by

    1. A.bacteria-infected cells
    2. B.virus-infected cells
    3. C.RBCs
    4. D.platelets
12. Question 384 marks

    The primary lymphoid organs are

    1. A.spleen and lymph nodes
    2. B.bone marrow and thymus
    3. C.tonsils and Peyer's patches
    4. D.liver and kidney
13. Question 394 marks

    Morphine is obtained from

    1. A.Cannabis
    2. B.the latex of poppy (Papaver somniferum)
    3. C.coca leaves
    4. D.tobacco
14. Question 404 marks

    The plasmid pBR322 carries resistance genes for

    1. A.ampicillin and tetracycline
    2. B.kanamycin only
    3. C.chloramphenicol only
    4. D.streptomycin and penicillin
15. Question 414 marks

    Taq polymerase is obtained from

    1. A.Thermus aquaticus
    2. B.E. coli
    3. C.Agrobacterium
    4. D.Bacillus thuringiensis
16. Question 424 marks

    Separated DNA fragments are made visible in gel electrophoresis by staining with

    1. A.ethidium bromide under UV light
    2. B.iodine
    3. C.methylene blue under daylight
    4. D.safranin
17. Question 434 marks

    The genes cryIAc and cryIIAb control

    1. A.cotton bollworms
    2. B.corn borer only
    3. C.nematodes
    4. D.viruses
18. Question 444 marks

    Human insulin produced by rDNA technology was first made by

    1. A.Eli Lilly
    2. B.Monsanto
    3. C.Pfizer
    4. D.Bayer
19. Question 454 marks

    Biopiracy refers to

    1. A.use of bio-resources by multinational companies without proper authorisation or compensation
    2. B.protecting endangered species
    3. C.farming genetically modified crops legally
    4. D.making vaccines