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Question Bank No: 10

1. In mammals scrotal sacs are situated out side the body cavity for

a)		Providing space for other body organs
b)		Normal development of sperm
c)		No apparent reasons
d)		Scrotal Sacs are situated in abdominal cavity

2. Rhodopsin pigment found in rods of retina. It can be synthesized by eating.

a)		Papaya, apple, and lemon
b)		Carrot and radish
c)		Carrot and papaya
d)		Radish , apple and lemon

3. The reflex action is a function of

a)		cerebrum
b)		cerebellum
c)		spiral cord
d)		Medulla oblongata

4. Arachnoid membrane

a)		Covers cranium
b)		Surrounds heart
c)		surrounds piamater
d)		surrounds duramater

5. In a human being number of cranial nerves are

a)		10 pairs
b)		6 pairs
c)		12 pairs
d)		13 pairs

6. During transmission of nerve impulse, which goes out in abudance during depolarization.

a)		N $a^{+}$
b)		C $a^{+ +}$
c)		C $l^{-}$
d)		$K^{+}$

7. Which slows down the secretion of salvary glands, increases rate of heart beat and deep breathing.

a)		Parasympathetic nervous system
b)		sympathetic nervous system
c)		Central nervous system
d)		Peripheral nervous system

8. The response of plant to environmental rhythms of light and darkness is

a)		Vernalisation
b)		Phototropism
c)		Parthenogenesis
d)		Phtoperiodism

9. Coleoptile in the seedlings of grasses is

a)		Plumule
b)		Radicle
c)		Sheat of plumule
d)		Sheat of radicle

10. Cytokinins are chemically

a)		Aminopurines
b)		Indoleacetic acid
c)		fibberellic acid
d)		IAA

11. Opening of a flower and drooping of buds are

a)		Hyponasty
b)		Epinasty
c)		Curvature movement
d)		Spontaneous movement

12. Maximum growth rate in a sigmoid curve is at

a)		Senescence
b)		Lagphase
c)		Steady phase
d)		Log- phase

13. Photoperiodic stimulus is perceived by

a)		Seeds
b)		Leaves
c)		Roots
d)		Root hair zone

14. Bioassay for gibberellin is

a)		Avena curvature test
b)		Oat coleoptile test
c)		green leaf test
d)		Dwarf maize test

15. Growth regulator that retards ageing in plants include

a)		Auxin
b)		ABA
c)		G $A_{3}$
d)		Cytokinin

16. 'Gall flowers' are characterstic of the inflorescence

a)		Hypanthodium
b)		Simple raceme
c)		Cyanthium
d)		Verticillaster

17. An inflorescence with pedicels of equal length arising from a common point is

a)		Cyanthium
b)		Corymb
c)		Spike
d)		Umbel

18. Dispersal of seed by parachute mechanism is found in

a)		Ground nut
b)		Glycine
c)		Sunflower
d)		Caryopsis

19. The fruit developing from a flower with apocarpous ovary is

a)		Simple
b)		Aggregate
c)		Composite
d)		Multiple

20. Which of the following is a cteistogamous flower.

a)		Brassica
b)		Solanum tuberosum
c)		Allium
d)		Commelina

21. If the endosperm of an angiosperm has 36 chromosomes. The number of chromosomes in its leaf cells are

a)		36
b)		18
c)		8
d)		24

22. The most common pollen tetrad in monocots is

a)		Tetrahedral
b)		Linear
c)		Isobilateral
d)		T -Shaped

23. Collar like out growth developing from base of ovule and forming a sort of third integument is

a)		Caruncle
b)		Aril
c)		Crona
d)		Calyptra

24. The part of the anther which produces both enzymes and hormone is

a)		Archesporium
b)		Middle lamella
c)		Middle layers
d)		Tapetum

25. Polygonum type of embryosac is

a)		Monosporic $-$ 8 $-$ nucleated
b)		Monosporic 4 $-$ nucleate
c)		Bisporic $-$ 8 $-$ nucleate
d)		Tetrasporic $-$ 8 $-$ nucleated

26. If Chalaza micorpyle and hilum lie in straight line, the ovule is

a)		Orthotropous
b)		Anatropous
c)		Amphitorpous
d)		Campylotropous

27. The product of triple fusion in angiosperm ovule is

a)		Zygote
b)		Suspensor
c)		Embryo
d)		Endosperm

28. Perisperm in the seeds of piper nigrum is derived from

a)		Endosperm
b)		Nucellus
c)		Integument
d)		antipodals

29. Growth of pollen tube through integuments during fertilization is

a)		Isogamy
b)		Anisogamy
c)		Mesogamy
d)		Iporogamy

30. A disease resistant plant can be produced by

a)		Out crossing
b)		Micropropagation
c)		Budding
d)		Grafttin

31. Silicon emulsions are used as

a)		Antitranspirants
b)		Antirespirants
c)		Anti auxin
d)		Hormones

32. The internal factor that affects transpiration includes

a)		light
b)		C $O_{2}$
c)		$O_{2}$
d)		Reduced leaf area

33. The main force behind guttation is

a)		Osmosis
b)		Root pressure
c)		Transpiration pull
d)		Cohesion

34. Wilting of plant occurs due to the process of

a)		Diffusion of salt
b)		Imbibition of water
c)		Endomosis
d)		Exosmosis

35. Water lost by transpiration is

a)		Pure water
b)		Rich in dissolved salt
c)		Rich in dissolved minerals
d)		Rich in Carbohydrates

36. Which of the following act as sink in the plant body

a)		Root cells
b)		Fruit
c)		Seeds
d)		all

37. The critical elements in the following are

a)		C, H,P
b)		C, H, ONSP
c)		N,P,K
d)		N, H, O

38. 'Dieback' of citrus is due to the deficiency of

a)		Mo
b)		Na
c)		K
d)		Cu

39. The main symptom of Boron deficiency is seen in

a)		Cortical region
b)		Meristematic region
c)		Vascular region
d)		Pericycle region

40. Haustorial roots are characteristic of

a)		Utricularia
b)		Rick
c)		Vanda
d)		Von Mohl

41. Importance of light in photosynthesis was recognized by

a)		Lavosier
b)		Ingen Housz
c)		Stephan Hales
d)		Joseph Priestly

42. Ammonia is a byproduct during the process of

a)		HMS
b)		EMP
c)		Cam Path way
d)		Photorespiration

43. The first C $O_{2}$ obsorbing molecule in Amaranthus plant is

a)		Phosphoenol pyruvate
b)		Pyruvatye
c)		ribulose biphosphate
d)		Oxallo acetic acid

44. Red drop phenomenon affects

a)		PS II
b)		PS I
c)		P700
d)		Carotenoids

45. Which of the organelle is not involved in photo respiration

a)		Mitochondria
b)		Peroxisome
c)		Chloroplast
d)		Lysosome

46. Which of the following represents photo phosphorylation

a)		ADP + AMP $\overset{light}{⟶}$ ATP
b)		ADP + P $O_{4}$ $\to$ ATP
c)		ADP + P $O_{4} \overset{light}{⟶}$ ATP
d)		AMP + P $O_{4}$ $\overset{light}{⟶}$ ATP

47. How many ATP molecules will be produced from complete oxidation of one molecule of acetyl CoA

a)		3 NAD $H_{2}$
b)		1FAD $H_{2}$
c)		1GTP
d)		12 ATP

48. During respiration, yeast converts glucose to

a)		Ethyl alcohol and water
b)		Ethyl alcohol and C $O_{2}$
c)		Pyruvic acid and C $O_{2}$
d)		Lactic acid and C $O_{2}$

49. If fermentation is allowed to occur in a closed vessel

a)		Vaccum will result
b)		no change occur
c)		Partial pressure of oxygen increase
d)		Partial pressure of C $O_{2}$ increase

50. Kreb cycle occurs in the

a)		Cytoplasm of the cell
b)		Mitochondrial matrix
c)		Granum of chloroplast
d)		Sugary solution