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प्रश्न
Veins and arteries carry blood. Which of these carry blood back to the heart?
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उत्तर
Veins carry blood back to the heart.
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संबंधित प्रश्न
Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.
Name two animals which breathe through gills.
What is the other name of wind-pipe?
Fill in the following blank with suitable word:
The organs of respiration in man are the _____________.
Fill in the following blank with suitable word:
The actual exchange of gases takes place in the ___________ of the lungs.
During respiration, the exchange of gases takes place in:
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(iv) alveoli increase surface area of the exchange of gases
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(b) What is the process of converting sugar into substance Y by the action of X known as?
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Answer this question.
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