Plant Growth Questions: Paper - 01 |
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Questions |
Answers |
1. Growth is a
(A) Irreversible increase in size
(B) Reversible increase in size
(C) Reversible increase in shape
(D) Increase in volume
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Answer: (A) |
2. The growth of plant differs from growth of animals in being
(A) Diffused
(B) Localised
(C) Localised and diffused
(D) Uniform
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Answer: (B) |
3. The seed which possess the ability to germinate in suitable favourable condition is called
(A) Quiescent
(B) Viable
(C) Dry
(D) Darmant
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Answer: (B) |
4. Dormancy of seed is
(A) Phase of active growth
(B) Phase of inactive growth
(C) Phase of stimulated growth
(D) Dead condition
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Answer: (B) |
5. The condition of viable seed when seeds do not germinate even in presence of favourable environmental condition is called
(A) Dormancy
(B) Secondary Dormancy
(C) Dead seed
(D) None of these
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Answer: (A) |
6. Quiescence means-
(A) Dormancy due to genetic reasons
(B) Dormancy due to internal conditions
(C) Dormancy due to external unfavourable conditions
(D) Dormancy due to immature embryo
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Answer: (C) |
7. The growth in dormant organs is
(A) Completely stopped
(B) Continuous
(C) Temporarily arrested
(D) Permanently arrested
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Answer: (C) |
8. Dormancy in seeds of xanthium is due to
(A) Seed coat imperable to water
(B) Seed coat imperable to gases
(C) Need for after ripening period
(D) Mechanically resistant seed coat
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Answer: (B) |
9. Dormancy, if occur due to internal factors, it is called
(A) Imposed dormancy
(B) Innate dormancy
(C) Quiescence
(D) Dormancy
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Answer: (B) |
10. Softening or rupturing of hard seed coat for breaking dormancy is called
(A) Villing
(B) Vernalization
(C) Stratification
(D) Scarification
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Answer: (D) |
11. The chemical substances like phenolics, caumarins, ferulic acid are
(A) Growth harmones
(B) Growth inhibitors
(C) Germination inhibitors
(D) Germination promoters
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Answer: (C) |
12. The seeds which can not germinate in absence of light is called
(A) Positively photoblastic seed
(B) Negatively photpblastic seed
(C) Photoblastic seed
(D) Photpperiodic seeds
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Answer: (A) |
13. Germination inhibitors leached out by one plant may inhibit germination of seeds of other plants is called as
(A) Allopathy
(B) Allelopathy
(C) Competitive absorption
(D) Aromapathy
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Answer: (B) |
14. Which of the following growth regulator is not used to break dormancy?
(A) Ethylene
(B) Gibberellins
(C) Cytokinins
(D) Abscisic acid
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Answer: (D) |
15. Keeping seeds in well aerated, moist condition at 1-100C temperature for weeks or months is called
(A) Pre-ripening
(B) Stratification
(C) Scarification
(D) Impaction
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Answer: (B) |
16. By which method tasta is made permeable to water?
(A) Vernalization
(B) Scarification
(C) Stratification
(D) Impaction
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Answer: (B) |
17. Which of the following is a growth inhibitor
(A) Auxin
(B) Cytokinin
(C) Gibberilins
(D) ABA
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Answer: (D) |
18. Threshing, chopping, rupturing seeds by hands or machines is called
(A) Scarification
(B) Chemical scarification
(C) Mechanical scarification
(D) Strafication
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Answer: (C) |
19. Imposed dormancy can be caused due to
(A) Immature embryo
(B) Hard and resistant seed coats
(C) Non availability of water and O2
(D) Mature embryo
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Answer: (C) |
20. The type of germination shown by plants of marshy land is
(A) Hypogeal
(B) Epigeal
(C) Viviparous
(D) None of these
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Answer: (C) |