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Question
Monoecious plant of chara shows occurrence of :
Monoecious plant of chara shows occurrence of :
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Solution
The correct option is C Upper oogonium and lower antheridium on the same plant
Chara is a genus of green algae. They are multicellular and superficially resemble land plants. They prefer less oxygenated and hard water. They are covered with calcium carbonate deposits and are commonly known as stoneworts.
Chara reproduces by both sexual and vegetative modes. Sexual reproduction of Chara is an advanced oogamous type. The sex organs are macroscopic and large. The male sex organ is yellow to red in colour, called globule. The female sex organ is more or less oval and green in colour and called nucule or oogonium. On maturity, globule develops into antheridia filaments made up of antheridium cells. Oogonium is always situated singly above the globule or antheridium.
Most of the species are homothallic or monoecious ( i.e. male and female sex organs develop on the same plant ) but some are heterothallic or dioecious ( i.e. male and female sex organs on different plants ).
Hence, the correct answer is upper oogonium and lower antheridium on the same plant.
Chara is a genus of green algae. They are multicellular and superficially resemble land plants. They prefer less oxygenated and hard water. They are covered with calcium carbonate deposits and are commonly known as stoneworts.
Chara reproduces by both sexual and vegetative modes. Sexual reproduction of Chara is an advanced oogamous type. The sex organs are macroscopic and large. The male sex organ is yellow to red in colour, called globule. The female sex organ is more or less oval and green in colour and called nucule or oogonium. On maturity, globule develops into antheridia filaments made up of antheridium cells. Oogonium is always situated singly above the globule or antheridium.
Most of the species are homothallic or monoecious ( i.e. male and female sex organs develop on the same plant ) but some are heterothallic or dioecious ( i.e. male and female sex organs on different plants ).
Hence, the correct answer is upper oogonium and lower antheridium on the same plant.
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