Question

name the structure shown and label the.parts 1 and 2 .is the given structure albuminous and exalbuminous .give reason for your answers​

Answer 1

Answer:

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Answer 2

a A develops into an embryo; B develops into endosperm. b Endosperm develops from primary endosperm nucleus PEN. Endosperm develops first followed by an embryo. The PEN undergoes successive nuclear divisions to give rise to free nuclei and this stage of endosperm development is called free nuclear endosperm. Subsequently cell wall is formed and endosperm becomes cellular. The water of tender coconut in the centre is free-nuclear endosperm and white kernel in the outer part is the multicellular endosperm. Non-albuminous seeds have no residual endosperm as it is completely consumed during embryo development e.g. pea groundnut. Albuminous seeds retain a part of endosperm as it is not completely used up during embryo development e.g. wheat maize barley castor sunflower