Question

Write notes on Structure of female gametophyte.

Answer 1

Structure Of Female Gametophyte

• The ovule arises as a small projection of homogeneous tissue on the placenta in the ovary.

• The projection elongates rapidly and develops into multicellular nucellus.

• The basal region will become the funicle.

• The integuments arises as rim like out growth from the base of the nucellus.

• The integuments cover the nucellus leaving a small part at the top called micropyle.

• At the micropylar end of the nucellus, a single cell is differentiated.

• It is the megaspore mother cell or megasporocyte.

• The female gametophyte is generally eight-nuclei.

• It contains one egg cell and two synergids, three antipodals and two polar nuclei at the centre.