Differentiate between: (a) Hypocotyl and epicotyl; (b) Coleoptile and coleorrhiza; (c) Integument and testa; (d) Perisperm and pericarp
Differentiate between:
(a) Hypocotyl and epicotyl;
(b) Coleoptile and coleorrhiza;
(c) Integument and testa;
(d) Perisperm and pericarp
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| Hypocotyl | Epicotyl |
|---|---|
| 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. |
| It terminates with the radicle. | It terminates with the plumule. |
| 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. |
| Integument | Testa |
|---|---|
| It is the outermost covering of an ovule. It provides protection to it. | It is the outermost covering of a seed. |
| Perisperm | percarp |
|---|---|
| It is the residual nucellus which persists. It is present in some seeds such as beet and black pepper. | It is the ripened wall for a fruit which develops from the wall of an ovary. |
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