With a neat labelled diagram, describe the parts of a typical angiosperm ovule.

A typical angiosperm anther is

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

Redraw the following diagram and label the parts .

Some raw data are given below: Iron tank, Carbon lining, Cryolite, Carbon blocks, electricity, alumina. Draw a neat labelled diagram by using the above data and explain the extraction of that metal.

Explain with the help of a labelled diagram the working of a transformer.

With the help of suitable diagram describe the logistic population growth curve.