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  • Can someone help me with this, Which of the following statements is correct ?

Which of the following statements is correct ?

  • Option 1)

    Horsetails are gymnosperms .

  • Option 2)

    Selaginella is heterosporous , while Salvinia is homosporous .

  • Option 3)

    Ovules are not enclosed by ovary wall in gymnosperms .

  • Option 4)

    Stems are usually unbranched in both Cycas and Cedrus .

 

Answers (2)

best_answer

As we learnt in

Seed -

Seed is fertilized or ripned ovule or a mature integumented megasporangium. Seed is characterstic of spermatophytes (gymnosperm & angiosperm).

-

Gymnosperms have naked ovule.


Option 1)

Horsetails are gymnosperms .

This is incorrect.

Option 2)

Selaginella is heterosporous , while Salvinia is homosporous .

This is incorrect.

Option 3)

Ovules are not enclosed by ovary wall in gymnosperms .

This is correct.

Option 4)

Stems are usually unbranched in both Cycas and Cedrus .

This is incorrect.

Posted by

Aadil

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