EVERYDAY SCIENCE

Detailed explanation-1: -Archegoniophore is a stalk on which the archegonia are borne. It is found in Marchantia.

Detailed explanation-2: -Marchantia is dioecious. Male and female sex organs develop on different thalli. Male reproductive organ is antheridia and the female reproductive organ is archegonia. They are born on the mature gametophyte and are erect and modified stalks known as antheridiophore and archegoniophore, respectively.

Detailed explanation-3: -Solution: Antheridiophore is present in Marchantia. Antheridiophore is an erect structure of gametophyte bearing antheridia only.

Detailed explanation-4: -Updated On: 27-06-2022. (d) In Marchantia, a bryophyte, the archegonia (female sex organs) are borne on special branches called archegoniophore or female receptacles. Each archegoniophore has rows of archegonia protected by involucre or perichaetium.

Detailed explanation-5: -Marchantia polymorpha is a dioecious species having male and female organs on different thalli. Female and male gametangia, known as the ‘archegonium’ (plural: archegonia) and ‘antheridium’ (plural: antheridia), are produced on the umbrella-like sexual branches of the female and male thalli, respectively.