B. Short Answer Type Questions
1. Give reasons for the following:
(a) Bacteria are a kind of plants.
(b) Bacteria are both useful and harmful to mankind.
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Explanation:
a) Bacteria are kind of plant because some bacteria are autotrophs they can make their own food for example cyanobacteria.
b) Some bacteria like cynobacteria helps in nitrogen fixation hence it is useful for mankind and some bacteria also destroy the plants or the crop hence they are harmful to mankind ..
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