Advertisements
Advertisements
प्रश्न
Give suitable explanation for the following:
Perspiration and transpiration help to cool the body temperature of the organism.
Advertisements
उत्तर
In both perspiration and transpiration, water is lost by evaporation from the body of the organism as water vapour. This evaporation reduces the temperature of the body surface and brings about cooling in the body of the organism.
संबंधित प्रश्न
An apparatus, as shown below, was set up to investigate a physiological process in plants. The setup was kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow:
- Name the process being studied.
- Explain the process named above in Q.3(a)(i).
- Why was the pot covered with a plastic sheet?
- Suggest a suitable control for this experiment.
- Mention two ways in which this process is beneficial to plants.
- List three adaptations in plants to reduce the above mentioned process.
Transpiration is the loss of water as water ______ from the ______ parts of the plant.
Name the following.
The tissue which conducts water absorbed by the roots to the upper parts of a herbaceous plant.
Distinguish between the following :
Cuticular transpiration and lenticular transpiration
Given alongside is the diagram of an experimental set-up to demonstrate a certain phenomenon in plants.
Would it make a difference if the experimental set-up is kept in bright sunshine?
Stomata of a plant open due to ______.
Transpiration is a necessary evil in plants. Explain.
ABA (Abscisic acid) is called a stress hormone. How does this hormone overcome stress conditions?
ABA (Abscisic acid) is called a stress hormone. From where does this hormone get released in leaves?
Define the following term:
Wilting
