The Total solution for NCERT class 6-12
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.