internal reproduction advantages

In case of sponges, the parent releases a specialised mass of cells enclosed in a common opaque envelope, called as the gemmule. Gemmules are thought to be internal buds, which on germination give rise to an offsprin..

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..

Introduction - Reproduction is defined as the production of individuals of the same species, that is the next generation of the species. While it is one of the fundamental characteristics of living things, it is not an essential life process. An individual can live without reproducing, bu..

Cyanobacteria reproduce mostly by vegetative and asexual methods. Vegetative reproduction occurs by fission or fragmentation or by the formation of hormogonia. Unicellular forms exhibit fission while filamentous multicellular forms exhibit fragmentation. Asexual reproduction occ..

Reproduction is only by sexual method. Earthworms are bisexual (hermaphrodite). The male reproductive system is represented by two pairs of testes, two pairs of seminal vesicles, two pairs of spermathecal funnels a pair of vasa deferentia (sperm ducts), a pair of prostate glands..

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The flowering in plants in response to temperatures is called thermoperiodism. Many species of plants require very low temperature treatment for seed germination and flowering. This is known as vernalization. In animals, the maturation of gonads and activity of spermatogenic tissue are also temper..