Morphology of Flowering Plants

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Generally, monocot seeds are endospermic but some are non-

endospermic (e.g. orchids).

The outer covering of endosperm separates the embryo by a

proteinaceous layer called aleurone layer.

In cereals such as maize, the seed coat is membranous and

generally fused with the fruit wall.

The embryo is small and situated in a groove at one end of the

endosperm. It consists of one large and shield shaped cotyledon

known as scutellum and a short axis with a plumule and a radicle.

(NEET 2016)

The endosperm is bulky and stores food.

The plumule is protected in a sheath called coleoptile and radicle is

protected in a sheath called coleorhiza.

SËMÏ-TËÇHÑÏÇÅL DËSÇRÏPTÏØÑ ØF Å TÝPÏÇÅL

FLØWËRÏÑG PLÅÑT

The plant is described beginning with its habit,

vegetative characters and then floral characters.

Then a floral diagram and a floral formula are

presented.

Floral formula is represented by some symbols.

⊕

+

K2+2C4A2+4G(2)