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प्रश्न
Out of photosynthesis and respiration in plants, which process occurs:
(a) all the time?
(b) only at daytime?
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उत्तर
(a) Respiration occurs all the time.
(b) Photosynthesis occurs only at daytime as it can take place only in the presence of sunlight.
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संबंधित प्रश्न
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Compare the functioning of alveoli in the lungs and nephrons in the kidneys with respect to their structure and functioning.
Name the type of respiration in which the end product is:
C2H5OH and CO2
Give one example where such a respiration can occur.
What is meant by aquatic animals and terrestrial animals?
Why do fishes die when taken out of water?
Why do the walls of trachea not collapse when there is less air in it?
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
When a person breathes in the air, the air enters into his body through an organ A having two holes B in it. The air then passes through the pharynx and larynx and enters into tube C. The tube C divides into two smaller tubes D at its lower end. The two smaller tubes are attached to two respiratory organs E. Each smaller tube divides inside the organs E to form a large number of still smaller tubes called F. The smallest tubes F have air-sacs G at their ends in which gaseous exchange takes place in the body of the person. What are A, B, C, D, E, F, and G?
What is the name of tissues which transport:
water and minerals in a plant?
Veins and arteries carry blood. Which of these carry blood back to the heart?
Tick the most appropriate answer.
The products of respiration are :
Differentiate between
External respiration and Internal respiration
Answer the following in short.
Define respiration.
Choose the odd one out in the following groups of four items each:
Hairy, Moist, Nostril, Vocal cord
Name the body structure concerned with the given functional activity:
Transports oxygen to the body cells.
Rewrite the following statement by selecting the correct option.
During respiration, ____________ gas is given out.
Complete the analogy.
Transport of CO2 by plasma : 7% :: Transport of CO2 by bicarbonate ions: ____________.
Name the substances whose build-up in the muscles during vigorous physical exercise may cause cramps?
Explain the three pathways of breakdown in living organisms.
On a very cold morning, Boojho and Paheli were talking with each other as they walked down to their school. They observed that the air coming out of their mouth looked like smoke. They were amused and wondered how it happened. Help them find the answer.
