Question

Assertion : In some leguminous plants, the leaf base is swollen.
Reason : The swollen leaf base is called pulvinus.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (B)

Leaf base is the lowermost part of the leaf by which the leaf is joined to the node of the stem. It protects the young axillary bud. In many legumes it is swollen. The swollen leaf base is known as pulvinus. It is responsible for sleep and shock movements of certain leaves, e.g., Mimosa pudica and Cassia.