List any two contrasting characters other than roundness of pea plants that Mendel used in his experiments with pea plants.

On cutting the body of an organism into many pieces it was observed that many of these pieces developed as new individuals. Name the process and list two organisms in which this process may be observed. Draw a schematic diagram to illustrate the changes that are likely to be observed during the development of new individuals in any one of the organisms named.

Mendel in one of his experiments with pea plants crossed a variety having round seeds with one having wrinkled seeds. Write his observations, giving reasons, of F1 and F2 progeny.

Write the name of the human male reproductive organ that produces sperms and secretes a hormone: Name the hormone secreted and state its function?

Write the site of fertilization and the part where the zygote gets implanted in the human female.