What are Leydig's cell? Give its function.

What are Leydig cells? Write down their functions.

Study the figure given below and answer the questions that follows (i) Pick out and name the cells that undergo spermiogenesis . (ii) Name A and B cells . What is the difference between them with reference to the number of chromosomes (iii) Pick out and name the motile cells . (iv) What is F cell ? Mention its function . (v) Name the structure of which the given diagram is a part . (vi) What is labelled as D ?

The Leydig cells secrete :

What is tonsil ? Write its functions.

What is alum? Give its composition.

What is cancer? Give its causes.

What is teflon ? Give its one use.

What are fuel cells? What are its advantages?

What is lymph ? Explain its function ?