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Secondary Growth

Why are PLUMU...

Question

Why are PLUMULE and RADICLE enclosed in sheaths?

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Solution

In monocotyledons, the pumule and radicle are enclosed in sheaths called the coleoptile and the coleorhiza respectively. The pumule and radicle burst through these coverings when germination starts. These sheaths are to protect the pumule and radicle.

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Q. The sheath enclosing radicle and plumule respectively in monocot seeds are

In monocot embryo radicle is enclosed in coleorhiza and plumule is enclosed in coleoptile

In monocot embryo, radicle is enclosed in coleorhiza and plumule is enclosed in coleoptile.

Q. Question 19
In Figure, the parts A, B and C are sequentially

(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule

Q. In the figure given alongside, the parts marked A, B and C are sequentially :
(a) cotyledon, plumule and radicle
(b) plumule, radicle and cotyledon
(c) plumule, cotyledon and radicle
(d) radicle, cotyledon and plumule

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