Biology · Plant Physiology
Dark-grown Arabidopsis seedlings, when exposed to ethylene gas, show a typical triple response. Following are certain statements regarding the triple response:
A. A dominant ethylene receptor mutant will not show a triple response in the presence of ethylene.
B. Tightening of the apical hook is one of the features of the triple response.
C. Loss of function of multiple receptors will show a triple response even in the absence of ethylene.
D. Increase in hypocotyl length is a feature of the triple response.
Which one of the following combinations is correct?
A. A dominant ethylene receptor mutant will not show a triple response in the presence of ethylene.
B. Tightening of the apical hook is one of the features of the triple response.
C. Loss of function of multiple receptors will show a triple response even in the absence of ethylene.
D. Increase in hypocotyl length is a feature of the triple response.
Which one of the following combinations is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1A, B and D
- 2B, C and D
- 3A, C and D
- 4A, B and C✓
Correct answer
A, B and C
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