horticulture MCQs – Page 2

Practise focused horticulture questions with marked answers for exam preparation and subject revision.

horticulture Mcqs
21. The smell in onion bulb is due to__________________?
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A. Sulphur components

B. bad odour of the soil

C. Much sugar

D. Fleshy leaves

22. Cotton fiber are made up of___________________?
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A. Protein

B. Cellulose

C. Starch

D. Fates

23. Skin diseases, night blindness and kidney stone are caused by the deficiency of__________________?
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A. Vitamin D

B. Protein

C. Vitamin A

D. Vitamin B

24. The metric unit of light is___________________?
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A. Lux

B. Lumen

C. Noticlemiles

D. Km

25. The portion of the axis below the cotyledons is known as___________________?
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A. Hypocotyle

B. Epictyl

C. Micropyle

D. None of the above

26. Plants which change from the vegetative to the reproductive stage by producing flowers and fruits when the day become longer is called___________________?
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A. Short day plants

B. Long day plants

C. Phototropism

D. Photoperiod

27. A form of controlled atmosphere storage in which the produce is stored in a partial vacuum is called___________________?
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A. Modified storage

B. Ca storage

C. Hypo baric storage

D. Gas storage

28. Self supporting succulent plants are called____________________?
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A. Off shoots

B. Herbs

C. Shurbs

D. Succulents

29. A condition of green plant in which they become unhealthy and pale yellow in colour in known as_________________?
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A. Chloroplast

B. Chlorsis

C. Leucoplast

D. Chromoplast

30. Citrus has its origin in____________________?
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A. Indo- Chinese region

B. Middle east

C. South America

D. Africa

31. Removing of certain shoots, cones, spurs from the base of plant is called___________________?
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A. Thinning out

B. Heading back

C. Training

D. Pruning

32. Aging process in which all plant parts except seeds die is called_________________?
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A. Partial Senescence

B. Complete Senescence

C. All the above

D. Senescence

33. What is 2,4-D____________________?
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A. IAA

B. All the above

C. 2-4 napthalene acetic acid

D. 2-4 diclorophenoxy acetic acid
34. Parthenocarpic refers to____________________?
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A. Seed less fruit

B. All the above

C. Single seeded fruit

D. Multi seed fruit

35. Heat requirement to change 1 Kg of a substance at its boiling point from the liquid to vapour is called__________________?
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A. Heat of vaporization

B. Heat of fusion

C. Mechanical heat

D. Heat energy

36. Plants which shed their leaves during winter are___________________?
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A. Evergreen

B. deciduous

C. Monoecious

D. annuals

37. Commercial growth inhibitors include__________________?
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A. All the above

B. Chlormequat

C. Daminozide

D. Cycocel

38. A branch of Horticulture dealing with the production of fruits and their distribution is called_______________?
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A. Pomology

B. Olericulture

C. Sericulture

D. Citricultire

39. Witting and shriveling of fruits is prevented by the use of_________________?
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A. 2,4-D

B. None of the above

C. Waxing

D. Ethylene

40. The artificial vegetative production is done by____________________?
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A. All the above

B. Budding

C. Layering

D. Grafting