question_answer

Identify the parts labelled as A, B, C and D in the given figure and select the correct option from the codes given below.

A)                     A - Seed coat B - Scutellum              C - Epicotyl               D - Hypocotyl

B) A - Seed coat B - Scutellum              C - Hypocotyl                        D - Epicotyl

C) A - Seed coat B - Cotyledon             C - Endosperm                       D - Hypocotyl

D) A - Seed coat B - Endosperm            C - Cotyledon                        D - Hypocotyl

Correct Answer: D

Solution :

[d] Given figure represents castor seed. It is oblong mottled brown endospermic and dicotyledonous seed. A thick hard but brittle testa covers the seed. A thin perisperm lies below it and around the kernel. A white oily endosperm lies below the perisperm. It stores food reserve as oil drops and proteins. Endosperm is source of castor oil. Embryo lies in the centre of seed. It consists of a short embryo axis bearing two thin semi- transparent oval cotyledons, a small indistinct plumule and a knob-shaped radicle.