what are disadvantages and advantages reproduction and development

In rats, as in all vertebrates, sexes are separate. Male and female exhibit several differences in their external features. The Male reproductive system consists of a pair of testis that are enclosed in scrotal sacs, a pair of vas deferens, a seminal vesicle, ejaculatory duct and penis. T..

Reproduction and Development..

Reproduction and Development..

Reproduction and Development..

..

..

..

Introduction - An animal performs all its life functions with an aim to be alive till it matures and reproduces. Reproduction is the ability of living organisms to produce new individuals similar to themselves. Reproduction ensures perpetuation and survival of their species. It ..

A cocoon may contain many fertilised eggs. However, only one of them develops at the expense of the others. Development is direct. There is no larval stage. A fully grown young worm crawls out of the cocoon in about two or three weeks. The young worm resembles the adult, except ..

Flowers are primarily concerned with sexual reproduction. But, in some plants such as Agave, the flower bud becomes modified into specialised structures called the bulbils . The bulbils are fleshy on account of storage of food in the floral leaves. The bulbils drop from the parent plant o..