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Questions and Answers
Which pigment is unique to cyanophyta in addition to bacterial chlorophyll?
Which pigment is unique to cyanophyta in addition to bacterial chlorophyll?
- Carotenoids
- Xanthophylls
- Phycocyanin (correct)
- Chlorophyll-B
What is the significance of cyanophyta in the history of Earth's atmosphere?
What is the significance of cyanophyta in the history of Earth's atmosphere?
- They were the first organisms to release elemental oxygen into the atmosphere (correct)
- They contributed to the greenhouse effect
- They caused depletion of atmospheric oxygen
- They were responsible for the formation of ozone layer
What is the main characteristic of cyanophyta?
What is the main characteristic of cyanophyta?
- Lack of photosynthetic pigments
- Presence of nucleus and flagella
- Existence as unicellular, colonial, or filamentous forms (correct)
- Predominantly terrestrial habitat
What special cells are found in some cyanophyta members, representing sites of protein synthesis?
What special cells are found in some cyanophyta members, representing sites of protein synthesis?
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What is the reserved food form in cyanophyta?
What is the reserved food form in cyanophyta?
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What is the primary function of heterocysts in blue-greens like Anabaena and Nostoc?
What is the primary function of heterocysts in blue-greens like Anabaena and Nostoc?
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What purpose do akinetes serve in blue-green algae?
What purpose do akinetes serve in blue-green algae?
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What is the primary function of phycocyanin in blue-green algae?
What is the primary function of phycocyanin in blue-green algae?
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How do cyanobacteria primarily reproduce?
How do cyanobacteria primarily reproduce?
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What is the chemical composition of the inner layer of the cell wall in blue-green algae?
What is the chemical composition of the inner layer of the cell wall in blue-green algae?
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