AIIMS 2019 Botany Gibberellins and Ethephon Assertion Reason Question
Assertion: Gibberellin is useful in early seed production in conifers.
Reason: Ethephon is responsible for early ripening in tomato and apple
If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false
Correct Answer
Detailed Explanation
The assertion that gibberellin and ethephon are plant growth hormones that promote early seed production and ripening is true; however, the reason provided does not adequately explain the mechanisms by which these hormones function. Gibberellins are primarily involved in seed germination and stem elongation, while ethephon releases ethylene, which is responsible for fruit ripening. Other options are not applicable as they do not provide relevant information or alternative explanations. Understanding the specific roles of these hormones helps clarify their distinct physiological effects in plant development.
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