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प्रश्न
Answer the following question.
A gas is released during photosynthesis. Name the gas and also state the way by which the gas is evolved.
उत्तर
Oxygen(O2) is released during photosynthesis.
During photosynthesis, plants absorb carbon dioxide and sunlight to produce carbohydrates. The solar energy trapped by chlorophyll breaks down water molecules by the process of photolysis. It is a type of photo-oxidation reaction that releases oxygen. This released oxygen gets emitted in the atmosphere.
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संबंधित प्रश्न
List the differences between aerobic and anaerobic respiration.
Name one substance which is produced in anaerobic respiration by an organism but not in aerobic respiration.
Which part of roots is involved in the exchange of respiratory gases?
Name the pores in a leaf through which respiratory exchange of gases takes place.
State whether the following statement is true or false:
Energy can be produced in cells without oxygen.
Why do fishes die when taken out of water?
Describe the exchange of gases which takes place in the leaves of a plant
(a) during daytime, and (b) at night.
Which of the following is correct for the process of anaerobic respiration?
| Carbon dioxide always produced | A lot of energy released | |
| (a) | No | Yes |
| (b) | No | No |
| (c) | Yes | No |
| (d) | Yes | Yes |
The breathing and respiration in woody stem of a plant takes place through:
In cockroaches, air enters the body through:
A, B and C are three living organisms. The organism A is a unicellullar fungus which can live without air. It is used in the commercial production of an organic compound P from molasses. The organism B is a unicellular animal which lives in water and feeds and moves by using pseudopodia. It breathes through an organelle Q. The organism C is a tiny animal which acts as a carrier of malarial parasite. It breathes and respires through a kind of tiny holes R and air-tubes S in its body.
(a) What are organisms (i) A (ii) B, and (iii) C?
(b) Name (i) P (ii) Q (iii) R, and (iv) S.
(c) Which organism/organisms undergo aerobic respiration?
(d) Which organism/organisms undergo anaerobic respiration?
Choose the odd one out in the following groups of four items each:
Trachea, Ciliated epithelium, Mucous, Diffusion
Name the body structure concerned with the given functional activity:
Prevents food from entering the trachea during swallowing.
State one function of the following:
Mitochondria
Differentiate between the following pairs on the basis of the aspect given in the brackets.
Tidal volume and Residual volume (Quantity of air)
With regard to the respiratory system and the process of respiration in man, answer the following question :
Give the overall chemical equation to represent the process of respiration in humans.
______ refers to the physical process by which gaseous exchange takes place between the atmosphere and the lungs.
____________ is necessary for the respiration in plant.
The Figure shown below represents an activity to prove the requirements for photosynthesis. During this activity, two healthy potted plants were kept in the dark for 72 hours. After 72 hours, KOH is kept in the watch glass in setup X and not in setup Y. Both these setups are air tight and have been kept in light for 6 hours. Then, Iodine Test is performed with one leaf from each of the two plants X and Y.
The function of KOH is to absorb ______.
