In aquatic ferns,the sporangia are found in a | vedclass

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(A) The aquatic fern $Azolla$ belongs to the family $Salviniaceae$. It is a heterosporous pteridophyte. In these aquatic ferns,the sporangia are enclo

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$Azolla$

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(A) The aquatic fern $Azolla$ belongs to the family $Salviniaceae$. It is a heterosporous pteridophyte. In these aquatic ferns,the sporangia are enclosed within a specialized,hardened,nut-like structure known as a sporocarp. $Selaginella$ is a heterosporous pteridophyte but is not primarily aquatic. $Pteridium$ and $Equisetum$ are terrestrial plants. Therefore,the correct answer is $Azolla$.

In aquatic ferns,the sporangia are found in a specialized structure called a sporocarp. This aquatic fern is .......

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