Gas bladder or air bladder is a gas filled sac present in fishes. It helps in maintaining buoyancy. Thus, it helps fishes to ascend or descend and stay in the water current.
Define a taxon. Give some examples of taxa at different hierarchical levels.
What are the steps involved in formation of a root nodule?
Name the components of the formed elements in the blood and mention one major function of each of them.
New cells generate from (a) bacterial fermentation (b) regeneration of old cells (c) pre-existing cells (d) abiotic materials
Cell is the basic unit of life. Discuss in brief.
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Air bladders is used as a lung in certain grops of fishes.
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