Question

Prothallus of Dryopteris is a ................ . It bears archegonia on the ................... side.

• A. Sporophyte, dorsal
• B. Sporophyte, ventral
• C. Gametophyte, dorsal
• D. Gametophyte, ventral

Answer 1

The correct option is D Gametophyte, ventral

• Spore is uninucleate haploid spherical structure.
• The spore germinates into gametophyte known as prothallus.
• Prothallus has archegonia present on the ventral side.
• Hence, the Prothallus of Dryopteris is a Gametophyte. It bears archegonia on the ventral side.
• So, the correct answer is 'Gametophyte, ventral'.