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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
During heavy exercise, we get cramps in the legs due to the accumulation of ______.
Name the process by which plant parts like roots, stems, and leaves get oxygen required for respiration.
State whether the following statement is true or false:
Energy can be produced in cells without oxygen.
Explain why, when air is taken in and let out during breathing, the lungs always contain a residual volume of air.
What is meant by aquatic animals and terrestrial animals?
Why do fishes die when taken out of water?
During the deficiency of oxygen in tissues of human beings, pyruvic acid is converted into lactic acid in:
The breathing and respiration in woody stem of a plant takes place through:
There are five animals P, Q, R, S and T. The animal P always lives in water and has gills for breathing. The animal Q can stay in water as well as on land and can breathe both, through moist skin and lungs. The animal R lives in soil and breathes only through its skin. The animal S lives on land and breathes through spiracles and tracheae. And animal T lives in water and breathes through its cell membrane.
(a) Which of the animals could be Amoeba?
(b) Which of the animals could be frog?
(c) Which animal could be fish?
(d) Which animal could be grasshopper?
(e) Which animal could be earthworm?
What is the name of tissues which transport:
water and minerals in a plant?
Out of xylem and phloem, which one carries materials upwards as well as downwards?
Fill in the following blanks with suitable words:
The ___________ blood cells make antibodies whereas ___________ blood cells help in respiration.
An animal in which the oxygenation of blood does not take place in the lungs is:
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.
Which of the following indicates the shift of oxyhaemoglobin dissociation curve due to change in ppC02 in blood?
Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:
Sometimes when we do heavy exercise, anaerobic respiration takes place in our muscle cells. What is produced during this process?
During the process of exhalation, the ribs move ______.
