Q. VI. Answer in short.
1. Name the different types of respiration.
2. Where does the blood absorb oxygen in the human body?
3. Why is respiration considered to be an energy giving process?
4. Why do we often sneeze when we inhale a lot of dust-laden air?
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Explanation:
1. Respiration is of two types - Aerobic respiration and Anaerobic respiration.
2. Blood absorbs the oxygen in the small organelles also known as Alveoli. In the lungs.
3. Carbolydrates present in food are broken down to form glucose. This glucose combines with oxygen in the cells of our body and provides energy.
4. When we inhale air containing dust particles, the particles get trapped in the hair present in nostrils. Sometimes, these particles may pass through the hair and enter the nasal cavity. They irritate the mucus lining of the nasal cavity, and as a result we sneeze.
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