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Sexual Reproduction in Flowering Plants — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYSexual Reproduction in Flowering Plants5 Marks
Question
Describe the difference between the structures of a dicot embryo and monocot embryo. Also draw LS of monocot and dicot seeds.
✓

Answer

Difference between the structures of a dicot embryo and monocot embryo:

S. No.
DICOT EMBRYO
MONOCOT EMBRYO
1.
Dicot embryo is enclosed in between two cotyledons.
Monocot embryo is enclosed by a single cotyledon.
2.
Dicot embryo has its plumule, future shoot in distal position.
Monocot embryo has its plumule in lateral position.
3.
Dicot embryo has no protective sheaths on the plumule and radicle.
Monocot embryo has protective sheaths called as coleoptile covering the plumule and coleorrhiza covering the radicle.
4.
Dicot embryo has no scutellum.
Monocot embryo has a scutellum.
5.
Dicot embryo mostly does not have an endosperm to nourish it.
Monocot embryo has an endosperm to nourish the embryo.

Diagram LS of monocot and dicot seeds:

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