Question
The table shows the processes of external fertilisation and internal fertilisation.
$6.$ Which of these is true about external fertilization and internal fertilization$?$
| External fertilisation | Internal fertilisation |
| The female releases the eggs (ova) outside its body. The male releases the sperms on the eggs. Fertilisation takes place outside the female body. | The male releases the sperms inside the body of the female. Fertilisation takes place inside the female body. |
| External fertilization | Internal fertilization | |
| $A.$ | Both parents are necessary | Both parents are necessary |
| $B.$ | Embryo is not formed | Embryo is formed |
| $C.$ | Involves development of eggshell | Involves development of eggshell |
| $D.$ | Takes place among invertebrates | Takes place among vertebrates |









