Class 7 Science - Chapter Water: A Precious Resource NCERT Solutions | You have been asked to maintain a garden
You have been asked to maintain a garden. How will you minimise the use of water?
When I was told to maintain garden, I will minimize the use of water using the drip irrigation method. In drip irrigation method, water is supplied directly to the plants using narrow pipes that reduces the loss of water. Then I will check the leakages in the water pipes and arrange small pits or digs for rain water harvesting. So that the collected rain water will be used later for the various purposes. To maintain a garden’ grass or plants, water is necessary.
Steps should be taken to maintain a garden and minimise the use of water are as follows:
1. You should not water plants through pipes because it wastes a lot of water. 2. You should use drip irrigation system to conserve or save water. 3. Do not give excess amount of water to plants. 4. You can reuse old water and rain water or the waste water of RO that is released in the excess amount. 5. Plant flowers that need less water for the growth.
More Questions From Class 7 Science - Chapter Water: A Precious Resource
- Q:-
Make a sketch showing groundwater and water table. Label it.
- Q:-
Explain how groundwater is recharged?
- Q:-
There are ten tubewells in a lane of fifty houses. What could be the long term impact on the water table?
- Q:-
Mark ‘T’ if the statement is true and ‘F’ if it is false:
(a) The freshwater stored in the ground is much more than that present in the rivers and lakes of the world. (T/F)
(b) Water shortage is a problem faced only by people living in rural areas. (T/F)
(c) Water from rivers is the only source for irrigation in the fields. (T/F)
(d) Rain is the ultimate source of water. (T/F) - Q:-
Explain the factors responsible for the depletion of water table.
- Q:-
Fill in the blanks with the appropriate answers:
(a) People obtain groundwater through________ and ________. (b) Three forms of water are ________, ________ and ________.
(c) The water bearing layer of the earth is ________.
(d) The process of water seepage into the ground is called ________. - Q:-
Choose the correct option. The total water
(i) in the lakes and rivers of the world remains constant.
(ii) under the ground remains constant.
(iii) in the seas and oceans of the world remains constant.
(iv) of the world remains constant. - Q:-
Which one of the following is not responsbile for water shortage?
(i) Rapid growth of industries
(ii) Increasing population
(iii) Heavy rainfall
(iv) Mismanagement of water resources
Popular Questions of Class 7 Science
- Q:-
State similarities and differences between the laboratory thermometer and the clinical thermometer.
- Q:-
State differences between acids and bases.
- Q:-
Classify the changes involved in the following processes as physical or chemical changes:
(a) Photosynthesis
(b) Dissolving sugar in water
(c) Burning of coal
(d) Melting of wax
(e) Beating aluminium to make aluminium foil
(f ) Digestion of food - Q:-
Name the elements that determine the weather of a place.
- Q:-
Fill the missing word in the blank spaces in the following statements:
(a) Wind is——————air.
(b) Winds are generated due to —————— heating on the earth.
(c) Near the earth’s surface __________air rises up whereas ___________ air comes down.
(d) Air moves from a region of ——— pressure to a region of ———. - Q:-
In addition to the rock particles, the soil contains
(i) air and water
(ii) water and plants
(iii) minerals, organic matter, air and water
(iv) water, air and plants - Q:-
Why does an athlete breathe faster and deeper than usual after finishing the race?
- Q:-
Match structures given in Column I with functions given in Column II.
Column I Column II
(i) Stomata (a) Absorption of water
(ii) Xylem (b) Transpiration
(iii) Root hairs (c) Transport of food
(iv) Phloem (d) Transport of water
(e) Synthesis of carbohydrates - Q:-
Fill in the blanks:
(a) Production of new individuals from the vegetative part of parent is called_____________.
(b) A flower may have either male or female reproductive parts. Such a flower is called_____________.
(c) The transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as _____________.
(d) The fusion of male and female gametes is termed as _____________.
(e) Seed dispersal takes place by means of _____________, _____________ and _____________. - Q:-
Classify the following as motion along a straight line, circular or oscillatory motion:
(i) Motion of your hands while running.
(ii) Motion of a horse pulling a cart on a straight road.
(iii) Motion of a child in a merry-go-round.
(iv) Motion of a child on a see-saw.
(v) Motion of the hammer of an electric bell.
(vi) Motion of a train on a straight bridge.
Recently Viewed Questions of Class 7 Science
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Give one use each of a concave and a convex mirror.
- Q:-
The mountaineers carry oxygen with them because:
(a) At an altitude of more than 5 km there is no air.
(b) The amount of air available to a person is less than that available on the ground.
(c) The temperature of air is higher than that on the ground.
(d) The pressure of air is higher than that on the ground. - Q:-
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Explain why there is no waste in a forest.
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List five products we get from forests?
- Q:-
Which of the following statements is not correct?
(i) Forests protect the soil from erosion.
(ii) Plants and animals in a forest are not depedent on one another.
(iii) Forests influence the climate and water cycle.
(iv) Soil helps forests to grow and regenerate - Q:-
Which part of the digestive canal is involved in:
(i) absorption of food ________________.
(ii) chewing of food ________________.
(iii) killing of bacteria ________________.
(iv) complete digestion of food ________________.
(v) formation of faeces ________________. - Q:-
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- Q:-
Distinguish between a parasite and a saprotroph.
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