Sperms have to enter the female reproductive passage, and fertilise the ovum by travelling through the vagina and uterus to reach the fallopian tube. This is the reason why sperms need to have mobility.

The reproduction in amoeba takes place by binary fission. In this process amoeba reproduces by dividing into two individuals. The nucleus of amoeba cell is divided into two. This is followed by division of its body into two, each part receiving a nucleus. Finally two amoebae are produced from one parent amoeba.

After fertilization, the zygote divides repeatedly and travels down the oviduct. As it travels down, many protective layers are formed around it. The hard shell is formed around the developing embryo. The hen finally lays the egg

Amoeba reproduces by asexual reproduction, binary fission. It begins the process of reproduction by the division of its nucleus into two nuclei. This is followed by division of its body into two, where each part receives a nucleus. Finally two amoebae are produced from one parent amoeba.

Organisms like honeybees, birds (turkey) and some lizards are reproduce by parthenogenesis.

The process of fertilisation that takes place outside the body of the female is called external fertilisation.

No, humans do not undergo metamorphosis.

The male sex hormone is testosterone.

Bud is the term used for the bulges observed on the sides of the body of Hydra.

Egg is the reproductive cell produced in a woman's ovary while sperm is the reproductive cell that is produced in the testes of a man.

Yes, there are organisms that have both male and female reproductive organs in the same body, e.g. earthworm, leech.

Yes, it has a specific function. The tail in sperm provides motility to it and helps it to reach female gemetes for fusion.