With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.

With the help of a diagram, explain the structure of mature male gametophyte .

With the help of a neat and labelled diagram describe the development of female gametophyte of angiosperms.

7 celled-8 nucleate embryosac is

Name the initial cells of the male and female gametophytes.

With neat and labelled diagram, explain froth floatation method.

Explain the structure of female gametophyte with a well labelled diagram.

With a neat labelled diagram, explain the working of a refracting telescope.

Metion the ploidy of the different types of cells present in the female gametophyte of an angiosperm.