The plumule and radicle are enclosed in sheaths in monocot embryo that are respectively, called:
Source: https://www.lazynewton.com/questions/botany/morphology-of-flowering-plants/plumule-radicle-enclosed-sheath-called-700599
Quick Answer
Option A
coleoptile and coleorhiza.
— Concept: This question tests your knowledge of the structure of a monocot embryo, specifically the protective sheaths…Step-by-step solution
1AnswerA·
Concept: This question tests your knowledge of the structure of a monocot embryo, specifically the protective sheaths covering the embryonic shoot and root.
Why (A) is correct: In monocot embryos, the plumule (embryonic shoot) is protected by a conical protective sheath called the coleoptile. Similarly, the radicle (embryonic root) is enclosed in an undifferentiated sheath known as the coleorhiza.
Why other options are wrong:
- (B) aleurone layer and scutellum: The aleurone layer is the outermost layer of the endosperm, and the scutellum is the single cotyledon in monocots. They are not protective sheaths for plumule and radicle.
- (C) coleorhiza and aleurone layer: This incorrectly pairs coleorhiza with plumule and aleurone layer with radicle.
- (D) aleurone layer and coleoptile: This incorrectly pairs aleurone layer with plumule.
NEET Tip: Remember that 'coleo' generally refers to a sheath or covering, helping to distinguish these structures in monocots.
Correct Answer: (A)
coleoptile and coleorhiza.