Biology-10th Life Processes CBSE Board 2024 Medium
(i) Why is respiratory pigment needed in multicellular organisms with large body size ? (ii) Give reasons for…
(i) Why is respiratory pigment needed in multicellular organisms with large body size ?
(ii) Give reasons for the following :
- (a)Rings of cartilage are present in the throat.
- (b)Lungs always contain a residual volume of air.
- (c)The diaphragm flattens and ribs are lifted up when we breathe in.
- (d)Walls of alveoli contain an extensive network of blood vessels.
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