NEET 2025 · BiologyFruit seedPrevious Year Question
In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called : (NEET 2025)
Answer: (B) Aleurone layer. In a cereal (monocot) grain the bulky endosperm stores food, and its outer covering is separated from the embryo by a protein-rich layer called the aleurone layer.
- A.Endosperm
- B.Aleurone layer✓
- C.Coleoptile
- D.Coleorhiza
Correct Answer
(B) Aleurone layer
Solution & Explanation
In a cereal (monocot) grain the bulky endosperm stores food, and its outer covering is separated from the embryo by a protein-rich layer called the aleurone layer. This is distinct from the sheaths of the embryo (coleoptile over the plumule, coleorhiza over the radicle). Hence the answer is the aleurone layer (option b). NCERT Reference: Ch 5, p.67, line(s) 15-16 — "The outer covering of endosperm separates the embryo by a proteinous layer called aleurone layer"
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