Why does endosperm development precede embryo development in angiosperm seeds? State the role of endosperm in mature albuminous seeds.

Write a note on development of Endosperm.

The seeds which have separate endosperm

Give one example of non-endospermic dicot seed.

Endosperm a product of double fertilization is angiosperms is absent in the seeds of

Long Answer Questions Five mark Each QUESTIONS FROM CBSE BOARD EXAMINATIONS : (a) Draw a diagrammatic sectional view of a mature anatropous ovule and label the following parts in it: (i) that develops into seed coat. (ii) that develops into an embryo after fertilization. (iii) that develops into an endosperm in an albuminous seed. (iv) through which the pollen tube gains entry into the embryo sac. (v) that attaches the ovule to the placenta (b) Describe the characteristic features of wind pollinated flowers.

Illustrate germination an development of seed with the help of digrams only .

Why does the zygote in angiosperms start developing into embryo only after some endosperm is formed?