Biology
The instrument which can be used to demonstrate geotropism is:
- Manometer
- Thermostat
- Clinostat
- Barometer
Chemical Coordination in Plants
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Answer
Clinostat
Reason — Geotropism can be demonstrated in laboratory by using Clinostat. It has two set-ups with planted pots. One is static while the other rotates.
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Apical dominance is influenced by :
- Gibberellins
- Ethylene
- Cytokinins
- Auxins
The growth movement of plant parts which occurs due to touch stimulus is called:
- Heliotropism
- Chemotropism
- Hydrotropism
- Thigmotropism
The hormone which accelerates senescence (ageing) and abscission of leaves is :
- IAA
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- ABA
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Match the items in column A with those of column B.
Column A Column B (a) Auxin (i) apical dominance (b) Gibberellin (ii) cell-division (c) Cytokinin (iii) fruit ripening (d) Ethylene (iv) internodal elongation