15
Question
Select the option that correctly identifies A, B and C in the given figure of female thallus of Marchantia.
Select the option that correctly identifies A, B and C in the given figure of female thallus of Marchantia.
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Solution
The correct option is C A-Archegoniophore, B-Gemma cup, C-Rhizoids
Marchantia is a dioecious plant. Sex organs are borne on stalked upright receptacles or gametophores. Gametophore of the male thallus is called antheridiophore having a stalk and an 8 lobed male receptacle. Gametophore of female thallus is called archegoniphore. Its receptacle has nine cylindrical processes or rays. It has root like structure called rhizoids and they reproduce asexually by gemmae, which are asexual buds present inside gemma cups. Hence, the correct labelling are as follows:
Marchantia is a dioecious plant. Sex organs are borne on stalked upright receptacles or gametophores. Gametophore of the male thallus is called antheridiophore having a stalk and an 8 lobed male receptacle. Gametophore of female thallus is called archegoniphore. Its receptacle has nine cylindrical processes or rays. It has root like structure called rhizoids and they reproduce asexually by gemmae, which are asexual buds present inside gemma cups. Hence, the correct labelling are as follows:
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