Which of the following predominant phycobilins ?

1. phycobilin
2. phycobilisome
3. phycocyanin
4. all
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Answer: C
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Cyanobacteria fix co2 through following cycle?

1. kreb
2. calvin
3. carbon cycle
4. nitrogen
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Answer: B
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The filaments of some bacteria have special cells called ?

1. centroplasm
2. phycobilisome
3. phycocyanin
4. heterocysts
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Answer: D
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Heterocysts are following shape ?

1. rod
2. helical
3. barrel
4. circular
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Answer: C
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Great role in nitrogen fixing following ?

1. centroplasm
2. phycobilisome
3. phycocyanin
4. heterocysts
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Answer: D
Explanation:
• heterocyst in bacteria help in fixing of nigtrogen
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A ring like outgrowth appear in the middle of cell and divides into two cells?

1. budding
2. binary fission
3. hormogonia
4. plancocci
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Answer: B
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The filaments of cyanobacteria breaks to form small fragments ?

1. budding
2. binary fission
3. fragmentation
4. plancocci
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Answer: C
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The broken pieces of filaments is called?

1. budding
2. binary fission
3. hormogonia
4. plancocci
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Answer: C
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Double concave discs of gelatinous material are formed between two cells is called?

1. combining disc
2. separation disc
3. collection disc
4. none
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Answer: B
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Under unfavourable condition some hormogonia develop thick wall is called ?

1. hormospores
2. heterospores
3. budding
4. bud formation
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Answer: A
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