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B. SHORT ANSWER TYPE QUESTIONS
1. Why does a person develop cramps after a vigorous exercise ?
2. What is breathing rate ? When do we breathe faster ?
3. How does an earthworm breathe ?
4. Do the fish and frog breathe in the same way ? Give justification.
5. Why one is not advised to sleep under a tree during night?
Answers
Answer:
1) Muscle cramps occur when there is anaerobic respiration taking place in our muscles. During anaerobic respiration, glucose gets converted into lactic acid which leads to lack of oxygen. A hot water bath or a massage can help in getting relief from the muscle cramps.
2) Rapid, shallow breathing, also called tachypnea, occurs when you take more breaths than normal in a given minute. When a person breathes rapidly, it's sometimes known as hyperventilation, but hyperventilation usually refers to rapid, deep breaths. The average adult normally takes between 12 to 20 breaths per minute.
3) Your lungs take in oxygen and give off carbon dioxide. Worms do not have lungs but I breathe through my skin. I take in oxygen through my skin and it goes right into my bloodstream. My skin must stay wet in order for the oxygen to pass through it, but if I am in too much water I will drown.
4) Yeah, this sentence is true that the fish and frog breathe in the same way but only in some parts of life the frogs breathes like a frog. When a frog is in its tadpole stage, then it breathes through through gills and its also lives in water.
5) But, during the day, carbon dioxide is used by the photosynthesis. That is, the plants leave carbon dioxide at night. On the basis of this it is that in the night if you sleep under the tree, you will not get oxygen, which can cause breathing problem, suffocation etc. Therefore, Trees are very important for us.
Explanation:
1.Muscle cramps occur when there is anaerobic respiration taking place in our muscles. During anaerobic respiration, glucose gets converted into lactic acid which leads to lack of oxygen. A hot water bath or a massage can help in getting relief from the muscle cramps
2.The average adult normally takes between 12 to 20 breaths per minute.
3.through their skin.
4.the fish and frog breathe in the same way but only in some parts of life the frogs breathes like a frog. ✔When a frog is in its tadpole stage, then it breathes through through gills and its also lives in water.
5.during the day, carbon dioxide is used by the photosynthesis. That is, the plants leave carbon dioxide at night. On the basis of this it is that in the night if you sleep under the tree, you will not get oxygen, which can cause breathing problem, suffocation etc. Therefore, Trees are very important for us.
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