Read the given unseen passage and answer the questions that follow: In this process of transpiration, water evaporates from the surface of a leaf through microscopic pores known as stomata. The loss of water creates a suction force that pulls up more water from the roots. Transpiration helps a plant to collect water and vital minerals from the soil. The amount of water lost from the leaves depends on how much water is in the soil, as well as other environmental conditions, such as temperature, humidity, and wind.Transpiration also transports water to the plant’s leaves for photosynthesis and carries minerals around the plant. Name the pores present on leaves through which loss of water takes place. Define Transpiration. State the conditions on which transpiration depends. Some plants that grow in dry areas reduce the surface of their leaves during water deficiencies ). If the temperature is cool enough and water levels are adequate, then the leaves expand again . Give reason. Give four points of importance to explain the role of transpiration in plants and in nature. Shreeya took a well watered potted plant with big leaves. She enclosed a leafy stem/ branch of the plant in a clean polythene bag. The mouth of the polythene bag was sealed with a tape/rope. This potted plant was kept in sunlight for 2-3 hours. State the observations made by Shreeya. What conclusion can we draw from this activity?
Answers
Answer:
1) the pores which are present on leaves through which transpiration rakes place is stomata
2) Transpration is the process in which the loss of water takes place in a plant and it helps in cooling efect of a plant.Transpiration helps a plant to collect water and vital minerals from the soil
3)The amount of water lost from the leaves depends on how much water is in the soil, as well as other environmental conditions, such as temperature, humidity, and wind.\
4) in dry areas some plants flatten their leaves during water deficiencies and again expand when the weather is good with water supply because Transpiration helps a plant to collect water and vital minerals from the soil. The amount of water lost from the leaves depends on how much water is in the soil, as well as other environmental conditions, such as temperature, humidity, and wind.Transpiration also transports water to the plant’s leaves for photosynthesis and carries minerals around the plant.
5) some important factors on which transpiration is important are:
- Transpiration helps in transportation of water in a plant
- It helps in maintaing temperature of the plant
- Helps in transporting minerls also
- It provides a sucction force to the plant for tansporting materials
Passage 2:
1) Shreya would observe that the area which she kept with the polythene bag would loose its green colour.By this we can understand that sunlight is also important for proccess of photosynthesis...
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