Q.Select the statements that are true for the seed of angiosperm from the given options :
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Start your 14-day free trial to unlock the full solution →In angiosperm seeds, the integuments harden into a protective seed coat, and the embryo’s metabolic activity slows during dormancy — but non-albuminous seeds lack endosperm, not residual endosperm, and the persistent nucellus in wheat is called perisperm only in certain other seeds like black pepper.
Let’s walk through each statement carefully, because the terminology around seed structure can be tricky — and the NCERT textbook is very precise about it.
Statement (i): “Non-albuminous seeds have no residual endosperm.”
This sounds plausible, but it’s not quite right. Non-albuminous seeds (also called exalbuminous seeds) are those in which the endosperm is completely consumed during embryo development, so the mature seed lacks endosperm altogether. The phrase “residual endosperm” would imply that some endosperm remains — but in non-albuminous seeds, there is none left. The NCERT clearly states that in such seeds (e.g., pea, groundnut), the endosperm is absent. So saying “no residual endosperm” is technically correct in meaning, but the wording is misleading because “residual” suggests something that could remain but doesn’t. More importantly, the NCERT uses the term “non-albuminous” precisely for seeds without endosperm — not for seeds that have some leftover. So this statement is false as phrased.
A common confusion: “non-albuminous” means endosperm is absent at maturity. “Albuminous” seeds retain endosperm. The word “residual” is not used by NCERT for this distinction.
Statement (ii): “Residual, persistent nucellus in wheat is known as perisperm.”
This is incorrect. In wheat, which is a cereal grain, the persistent nucellus does not form a perisperm. The NCERT textbook specifically mentions that perisperm is the persistent nucellus found in seeds like black pepper and beet — not in wheat. In wheat, the endosperm is the major storage tissue, and the nucellus degenerates. So this statement is false.
Statement (iii): “Integuments of ovules harden as tough protective seed coat.” …
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