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.

With the help of a neat and labelled diagram, describe the development of female gamletophyte of angiospersms.

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.

How does a meiocyte develop into the female gametophyte in an angiosperm? Draw a labelled diagram of the structure bearing the female gametophyte in an angiosperm and label the nutritive and the protective layer present in it.

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.