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Distinguish between bacteria & cyanobacteria.

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CBSE/Class 11/Science/Biology Tuition/Class XI-XII Tuition (PUC)

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Difference # Bacteria: 1. The cells are comparatively smaller. 2. The cell wall is 1 " 2 layered. 3. Plasmodesmata and pores do not occur in cell wall. 4. They exhibit lesser structural elaboration. 5. Bacteria are both autotrophic and hetero trophic. 6. Autotrophic bacteria possess bacteriochlorophyll. 7.... read more
Difference # Bacteria: 1. The cells are comparatively smaller. 2. The cell wall is 1—2 layered. 3. Plasmodesmata and pores do not occur in cell wall. 4. They exhibit lesser structural elaboration. 5. Bacteria are both autotrophic and hetero­trophic. 6. Autotrophic bacteria possess bacteriochlorophyll. 7. Photosynthesis is an-oxygenic. 8. Photoautotrophic bacteria do not contain phycobilins. 9. Flagella may be present. 10. Carbohydrate reserve food is glycogen. Difference # Cyanobacteria: 1. The cells are comparatively larger. 2. The cell wall is four layered. 3. They are often present. 4. They show higher degree of morphological complexity as well as structural elaboration. 5. Cyanobacteria are generally autotrophic. 6. Cyanobacteria contain chlorophyll a as found in eukaryotic autotrophs. 7. Photosynthesis its oxygenic. 8. They possess accessory water soluble photosynthetic pigments known as phycobilins. 9. Flagella are absent. 10. Carbohydrate reserve food is a special starch known as cyanophycean starch. read less
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Cyanobacteria is also known as blue-green algae. They differ from other bacteria in that cyanobacteria possess chlorophyll-a, while most bacteria do not contain chlorophyll.
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S.N. Characters Bacteria Cyanobacteria 1 Size Comparatively smaller. Comparatively larger. 2 Distribution Found every possible places in earth. Only found in presence of sunlight and moisture. 3 Flagella May bear flagella. Flagella always absent. 4 Cell wall 1-2 layered. 4 layered. 5 Composition... read more
S.N. Characters Bacteria Cyanobacteria 1 Size Comparatively smaller. Comparatively larger. 2 Distribution Found every possible places in earth. Only found in presence of sunlight and moisture. 3 Flagella May bear flagella. Flagella always absent. 4 Cell wall 1-2 layered. 4 layered. 5 Composition of cell wall Glycolipids and peptidoglycan. Cellulose and pectin. 6 Nutrition May be autotrophic or heterotrophic. Usually autotrophic. 7 Photosynthetic pigments Photosynthetic pigment is bacteriochlorophyll. Photosynthetic pigments is chlorophyll a. 8 Accessory pigment Absent Accessory pigment like phycocyanin and phycoerythrin are present in dominating form. 9 Reserve food Glycogen Cyanophycean starch 10 Spore formation Is endogenous. Is not endogenous. 11 Hydrogen donor During photosynthesis hydrogen donor is not water; as a result oxygen is not evolved. Thus photosynthesis is anoxygenic. Hydrogen donor is water, oxygen is evolved. Process is oxygenic. 12 Locomotory organ Flagella act as locomotory organ. Lack flagella and other locomotory organ. 13 Heterocyst Absent Present. read less
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