Question

Distinguish between external fertilisation and internal fertilisation . Give example

Answer 1

the main difference between internal and external fertilization is that :
the internal fertilization occurs inside the body that has external fertilization happening outside the body.....
external fertilization : amphibians and fish species can fertilize eggs outside their body
internal fertilization : mammals ,reptiles and birds are some example of internal fertilization

Answer 2

>>>phylum--internal fertilisation - Mammalian; Aves

external fertilisation - Pisces , Amphibia

⍟⍟⍟⍟there are two different modes of fertilisation in nature⍟⍟⍟⍟

°°°°° INTERNAL FERTILISATION°°°°

>>>>>> the fertilized which inside the female body is called INTERNAL FERTILISATION.

It occurs in in mammals, human beings, birds, reptiles etc..

°°°°°EXTERNAL FERTILISATION °°°°°

>>>>>>> the fertilization with takes place outside the female body is called as EXTERNAL FERTILISATION.

---it occurs in amphibians like frogs, toads, fishes etc

<<<<<< in external fertilization the female and male gamete release the sperms and eggs in water fertilization takes place by collision between sperms and eggs..

>>>>>for example the males and females of frogs and fishes releasing sperms and eggs in water in which they live.

the sperms and collide with the action fertilized outside the female body of frog a fish .