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.
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.
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.
