Assertion: Ethylene promotes transverse growth but retards longitudinal growth.
Reason: Ethylene alters the tropic responses of roots and is synthesized in various plant parts.
Both the assertion and reason are true, and the reason is the correct explanation of the assertion.
Both the assertion and reason are true, but the reason is not the correct explanation of the assertion.
The assertion is true, but the reason is false.
The assertion is false, but the reason is true.
The assertion correctly states that ethylene promotes transverse growth (lateral expansion) but retards longitudinal growth (vertical growth) in plants. The reason supports this by mentioning that ethylene alters the tropic responses of roots and is synthesized in various plant parts, indicating its involvement in regulating growth patterns.
Option 1 is the correct answer