Phylum with fertilized internal fertilization and external fertilization
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Coelenterata ,which exhibits metagenesis shows both internal and external fertilisation.
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>>>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 gamut 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 .
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 gamut 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 .
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