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Questions and Answers
Describe the process of fertilization in Riccia Water.
Describe the process of fertilization in Riccia Water.
Antherozoids swim in water to reach the archegonium, where one penetrates the egg for fertilization.
What triggers the release of antherozoids in Riccia Water?
What triggers the release of antherozoids in Riccia Water?
The apical cells of the antheridial wall swell and break down to release the antherozoids.
How do antherozoids reach the egg in Riccia Water?
How do antherozoids reach the egg in Riccia Water?
Antherozoids swim in a thin film of water to the archegonium, guided by chemotactic response.
What is the result of the fusion of male and female gametes in Riccia Water?
What is the result of the fusion of male and female gametes in Riccia Water?
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Why does the mucilaginous mass in the archegonium swell up in Riccia Water?
Why does the mucilaginous mass in the archegonium swell up in Riccia Water?
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What is the role of the neck canal cells in Riccia Water fertilization?
What is the role of the neck canal cells in Riccia Water fertilization?
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What are the essential factors for spore germination?
What are the essential factors for spore germination?
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What is the structure that comes out of the spore as a tubular outgrowth during germination?
What is the structure that comes out of the spore as a tubular outgrowth during germination?
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What is the content of the cytoplasm inside the germinal tube during germination?
What is the content of the cytoplasm inside the germinal tube during germination?
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What structure does the germ tube form as it elongates rapidly during germination?
What structure does the germ tube form as it elongates rapidly during germination?
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What is the first cell division that occurs at the distal end of the club-shaped structure during germination?
What is the first cell division that occurs at the distal end of the club-shaped structure during germination?
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How many tiers of cells are formed during the octant stage of germination?
How many tiers of cells are formed during the octant stage of germination?
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What is the function of the distal tier of four cells in the octant stage?
What is the function of the distal tier of four cells in the octant stage?
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Describe the structure of a mature antheridium.
Describe the structure of a mature antheridium.
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What is the role of water in the dehiscence of antheridium?
What is the role of water in the dehiscence of antheridium?
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Explain the structure of an archegonium.
Explain the structure of an archegonium.
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What is the significance of the upper part of the neck of the archegonium protruding out of the cavity?
What is the significance of the upper part of the neck of the archegonium protruding out of the cavity?
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Differentiate between protandry and protogyny in monoecious species.
Differentiate between protandry and protogyny in monoecious species.
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Explain the term homothallic and give an example of a heterothallic species.
Explain the term homothallic and give an example of a heterothallic species.
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