Sexual reproduction and asexual reproduction
Gametes and zygote
External fertilization and internal fertilization
Viviparous and oviparous animals
Compare the reproduction in Hydra and Amoeba. Note down the differences in your notebook.
Why do fish and frog lay more number of eggs whereas cow and human beings usually give birth to only one at a time?
Can animals produce off springs even without formation of zygotes, how? Explain with suitable example.
How can you identify the animal is viviparous or oviparous.
Who am I?
a) I am formed by the fusion of male and female gametes...
b) I am a gamete that has a tail and travel to fuse with female gamete...
c) I am a fully developed embryo inside a mother’s body...
State the reason why most of the terrestrial animals’ fertilisation takes place internally.