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- #National Eligilibility Cum Entrance Test
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Thick walled cells, present at terminal or lateral position in cyanobacteria are called
Option: 1
Chromatophores
Option: 2
Akinete
Option: 3
Heterocysts
Option: 4
Endospore
Answers (1)
Cyanobacteria -
- Cyanobacteria are also known as blue-green algae are photosynthetic prokaryotes.
- They are considered to be the most ancient forms of algae.
- Cyanobacteria are found in all kinds of environments.
- They possess photosynthetic pigments like chlorophyll a, phycocyanin and carotenoids.
- Their reserve food material is cyanophycean starch.
- They are unicellular, colonial or filamentous organisms.
- Each filament remains covered in a mucilage covering.
- Flagella are absent in cyanobacteria.
- Cyanobacteria do not have chloroplasts. Photosynthesis takes place in membranous stacks called chromatophores.
- Cyanobacteria possess heterocysts which are thick-walled cells that are found in terminal, intercalary or lateral position. It is involved in the nitrogen fixation.
- Examples: Spirulina ( highly proteinaceous superfood ), Nostoc, Oscillatoria, Anabaena and Rivularia etc.
- Cyanobacteria possess heterocysts which are thick walled cells that are found in terminal, intercalary or lateral position. It is involved in the nitrogen fixation.
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