In the prothallus of Dryopteris (fern),the se | vedclass

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(A) The prothallus of $Dryopteris$ (a fern) is a heart-shaped,photosynthetic,independent gametophyte.In ferns,the sex organs,which are the antheridia

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Lower surface for both antheridia and archegonia

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(A) The prothallus of $Dryopteris$ (a fern) is a heart-shaped,photosynthetic,independent gametophyte.In ferns,the sex organs,which are the antheridia (male) and archegonia (female),are typically found on the ventral or lower surface of the prothallus.This position protects the delicate sex organs from desiccation and facilitates the movement of flagellated sperms towards the egg in the presence of water.Therefore,both antheridia and archegonia are located on the lower surface of the prothallus.

In the prothallus of $Dryopteris$ (fern),the sex organs are located on the:

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