Answer: Option B. -> False
:
B
The given statement is false.
The process of evaporationof water from plant leaves is called transpiration. Transpiration is also partially responsible for pulling the water up from root through shoot.

Answer: Option B. -> False
:
B
Both excessive rain and lack of rain are harmful for agriculture. Lack of rain causes drought and the availability of water is reduced. Excessive rain causes flooding which is equally disastrous.

Answer: Option B. -> Water cycle
:
B
Drying of water under sunlight is an example of evaporation of water. This is phenomenon X.
The water vapours present in air outside the surface of the cold glass of water get condensed due to cooling. The conversion of vapours into liquid is known as condensation.This is phenomenon Y.
The two phenomena play an important role in the water cycle.

Answer: Option A. -> evaporation of water followed by condensation
:
A
Water evaporates from the surface of rivers, oceans, lakes.
Warm air rises up taking water vapour with it. As it goes up, it loses heat and the amount of water vapour air can hold decreases. This causes condensation of water and clouds are formed as bulks of suspended water droplets. These tiny water droplets appear as rain.

Answer: Option C. -> Rain water harvesting
:
C
Groundwater is a good source of freshwater. However,increase in theusage of groundwater drops the groundwaterlevel. A way to prevent this is harvesting rainwater.
Rainwater harvesting focusses on collection of rain water instead of allowing it to evaporate into the air. It results in the increase of groundwater level.

Answer: Option B. -> False
:
B
When water evaporates, it transfer to the airin the form of water vapour. Water requires heat from the surroundings to evaporate. This heat can be provided by warm and dry air. An example is the evaporation of water inside a closed room. Hence, sunlight is not necessary for evaporation of water.

:
Characteristics of drinking water: 1 Mark
Reasons for undrinkablesea water: 2 Marks
The characteristics of drinkingwater are :
(i) It should be colourless and odourless.
(ii) It should be free from any suspended impurities.
Water in ocean and seas is salty becausemany salts are dissolved in it. Salt has dehydrating properties, so the more salt water wedrink, the more wateris lost from our body. As wedrink sea water, the water already present in our body is rerouted to help our body dilute the excess of salt.

:
1 Mark each
[Mention any three]
Water is an essential source for the existence of life. Some ways in which we can conserve water are as follows:
1. Avoiding water wastage is also a kind of water conservation.
2. Dams can be built to store excess rainwater running in the river.
3. Drinking water should not be wasted to water the plants.
4. Water should not be wasted during irrigation of fields. Modern methods like spraying, sprinkling or drip irrigation should be used.
5. Water should be used judiciously to avoid wastage.

:
Each source: 0.5 Marks
Some of the common sources of water are ponds, rivers, wells andhand pumps.

:
Each source: 1 Mark
a)The source of water for wells isgroundwater.
b)The source of water for groundwater is rain.
c)The source of water in theatmosphere is evaporation from water sources on the ground.