Worksheet 15 Life Process Important question 100% success @CBSE@NEET BASICS
Life Process 1. Why does the small and single celled animals such as amoeba, not require any respiratory pigment? Ans: The amoeba does not require any respiratory pigment to transport oxygen. The possible reason could be that their body size and number of cells are small. Its oxygen requirement is met by diffusion. 2. Where do the respiratory pigments combine reversible with oxygen? Ans : Respiratory pigments are coloured proteins capable of combing reversibly with oxygen, hence increasing the amount of oxygen that can be carries by the blood. 3. Why does the air passage not collapse when there is no air in it? Ans: The air passage, i.e. trachea is supported by incomplete C-shaped cartilaginous rings, which prevent its collapsing in the absence of air. 4. While breathing out, point out the change you think occur in diaphragm and intercostal muscles. Ans: The diaphragm and intercostal muscles relax when we breathe out. This compresses the chest cavity forcing the air out of lungs. 5.