Antheridiophore and archegoniophore on the same plant
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B
Stamen and carpel on the same plant
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C
Upper antheridium and lower ogonium on the same plant
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D
Upper oogonium and lower antheridium on the same plant
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Solution
The correct option is D Upper oogonium and lower antheridium on the same plant Monoecious (bisexual) plant of Chara shows occurrence of upper oogonium (female reproductive organ) and lower antheridium (male reproductive organ) on the same plant.