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Differentiate between:
(a) Hypocotyl and epicotyl;
(b) Coleoptile and coleorrhiza;
(c) Integument and testa;
(d) Perisperm and pericarp.
Asked by Rituraj Last Modified
Answer
Differentiate between
(a)
| Hypocotyl | Epicotyl | |
| 1. | The portion of the embryonal axis which lies below the cotyledon in a dicot embryo is known as the hypocotyl. | The portion of the embryonal axis which lies above the cotyledon in a dicot embryo is known as the epicotyl. |
| 2. | It terminates with the radicle. | It terminates with the plumule. |
(b)
| Coleoptile | Coleorrhiza | |
| It is a conical protective sheath that encloses the plumule in a monocot seed. | It is an undifferentiated sheath that encloses the radicle and the root cap in a monocot seed. | |
(c)
| Integument | Testa | |
| It is the outermost covering of an ovule. It provides protection to it. | It is the outermost covering of a seed. | |
(d)
| Perisperm | Pericarp | |
| It is the residual nucellus which persists. It is present in some seeds such as beet and black pepper. | It is the ripened wall of a fruit, which develops from the wall of an ovary. | |
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