Explain the role of tapetum in the formation of pollen-grain wall.
Assertion (A): The tapetum plays a crucial role in pollen grain development. Reason (R): The tapetum nourishes the developing pollen grains with essential nutrients.
Correct answer: A — If both assertion and reason are true and the reason is the correct explanation of the assertion.
NCERT states “The innermost wall layer is the tapetum. It nourishes the developing pollen grains.” Both statements are true from NCERT. The Reason explains HOW the tapetum plays its crucial role - through providing nourishment, which is a mechanistic explanation of its importance in pollen development.
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