Question

Name the following
5)Animal which reproduces by binary fission.
6. An animal in which external fertilization of gametes takes place.
7. An animal in which internal fertilization of gametes take place.​

Answer 1

Explanation:

5) The unicellular organism called amoeba reproduces by the method of binary fission. Amoeba reproduces by binary fission by dividing its body into 2 parts. When the amoeba cell reached its maximum size of growth, then first nucleus of amoeba lengthens and divides into two parts.

6. Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes. Benthic marine plants also use external fertilization to reproduce.