Which of the following pigments are not found in cyanobacteria? chlorophyll phycocyanin phycoerythrin none of the above 1 points question 9 bacteria are divided into two groups based on how their cell walls absorb stain. lipids. water. none of the above 1 points question 10 bacteria cows digest cellulose. symbiotic autotrophic saprophytic none of the above 1 points question 11 which of the following does not contribute to bacteria's large diversity? small size ability to reproduce quickly diverse habitats none of the above

8- All three pigments are found in Cyanobacteria.

9- Stain

10- Symbiotic

11-Small size , ability to reproduce , diverse habitats all contributes to bacterial diversity.

Explanation: 8-By the presence of different pigments Cyanobacteria shows different colors. Chlorophylll a green pigment, Phycocyanin a blue color pigment, Phycoeythrin a red color pigment.

9- Bacteria are divided into two groups gram positive and gram negative. Those who retain crystal violet stain are gram positive and the one do not retain color are gram negative.

10- Symbiotic bacteria helps cows to digest cellulose. Cows have Symbiotic bacteria in their intestinal tract.They release enzymes which help cellulose to digest.

11- Bacteria has large diversity. Small size , diverse habitat and ability to reproduce contribute to their diversity.

the answer would be 3

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