alleryWhich hormone moves from roots toward shoots to signal lateral bud growth?
- Ethylene
- Gibberellin
- Cytokinin
- Auxin
Show answer and solution
Correct answer: C. Cytokinin
Cytokinin moves from roots to shoots and signals lateral bud growth.
ICSE Class 10 Plant Physiology — practice questions — page 7
Explore 212 free Plant Physiology questions in ICSE Class 10 Biology. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 181–210 of 212.
Which hormone moves from roots toward shoots to signal lateral bud growth?Read the answer and worked solution →What can a higher cytokinin-to-auxin ratio induce?Read the answer and worked solution →Where are most adenine-type cytokinins synthesized?Read the answer and worked solution →How do cytokinins relate to auxin in apical dominance?Read the answer and worked solution →What can auxin and cytokinin do together?Read the answer and worked solution →Which hormone inhibits seed germination and helps maintain dormancy?Read the answer and worked solution →During drought, which hormone helps close stomata?Read the answer and worked solution →What does ABA-induced stomatal closure reduce?Read the answer and worked solution →What does ABA do to seed dormancy?Read the answer and worked solution →What can ABA accumulation in a maturing seed prevent?Read the answer and worked solution →Which hormone can oppose gibberellin in seed germination?Read the answer and worked solution →Which major plant hormone is gaseous?Read the answer and worked solution →What process can ethylene induce in fruits?Read the answer and worked solution →What happens when natural ethylene is removed from fruit storage?Read the answer and worked solution →What can ethylene do to a shoot that meets an underground obstacle?Read the answer and worked solution →What usually happens to ethylene when a new shoot reaches light?Read the answer and worked solution →Which hormone pair can promote leaf and fruit shedding?Read the answer and worked solution →What does the term synergism mean for plant hormones?Read the answer and worked solution →Auxin and cytokinin can cooperate in which process?Read the answer and worked solution →Which hormone pair often has opposing effects on shoot and root growth?Read the answer and worked solution →Which growth regulator can stimulate roots on cuttings at suitable doses?Read the answer and worked solution →Which processes are promoted by gibberellins?Read the answer and worked solution →Stomata close during water stress. Which hormone signals this?Read the answer and worked solution →Why do only some cells respond to a hormone?Read the answer and worked solution →Match each phase of photosynthesis with its biochemical event and location:Read the answer and worked solution →Match each plant pigment with its role in solar energy harvesting:Read the answer and worked solution →Match each factor limiting photosynthetic rate (Blackman's Law) with its effect:Read the answer and worked solution →Match each classic photosynthesis experiment with the factor it demonstrates:Read the answer and worked solution →Match each pathway of plant transpiration with the organ through which water vapor is lost:Read the answer and worked solution →Match each mechanism of stomatal regulation with its physiological trigger:Read the answer and worked solution →
Worked practice questions
What can a higher cytokinin-to-auxin ratio induce?
- Shoot-bud growth
- Root formation
- Seed dormancy
- Fruit drop
Show answer and solution
Correct answer: A. Shoot-bud growth
A higher cytokinin ratio promotes shoot-bud growth.
Where are most adenine-type cytokinins synthesized?
- In flowers
- In root tissue
- In mature seeds
- In leaf veins
Show answer and solution
Correct answer: B. In root tissue
Roots synthesize most adenine-type cytokinins.
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