Coleorhiza is the protective sheath covering of:
Source: https://www.lazynewton.com/questions/botany/morphology-of-flowering-plants/coleorhiza-protective-sheath-covering-of-063593
Quick Answer
Option A
radicle.
— 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 its embryonic axis parts.
Why (A) is correct: In monocot seeds, the coleorhiza is a protective, undifferentiated sheath that encloses the radicle (embryonic root) and its root cap. It protects the radicle as it emerges from the seed during germination.
Why other options are wrong:
- (B) plumule: The plumule (embryonic shoot) in monocots is protected by a different sheath called the coleoptile.
- (C) hypocotyl: The hypocotyl is the embryonic stem below the cotyledons, and it is not directly covered by the coleorhiza.
- (D) epicotyl: The epicotyl is the embryonic stem above the cotyledons, and it is also not covered by the coleorhiza.
NEET Tip / Mnemonic: Remember that 'R' for Radicle goes with 'R' in ColeoRhiza, and 'P' for Plumule goes with 'P' in ColeoPtile. This helps distinguish their protective sheaths.
Correct Answer: (A)
radicle.