Cyanobacteria MCQ - Practice Questions with Answers
Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET
Quick Facts
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Cyanobacteria is considered one the most difficult concept.
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22 Questions around this concept.
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EASYPigment-containing membranous extensions in some cyanobacteria are:
Besides paddy fields, cyanobacteria are also found inside vegetative parts of:
The cyanobacteria are also referred to as
Concepts Covered - 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.
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