Advertisements
Advertisements
प्रश्न
Give Reasons for the following:
Plants absorb more water than their requirement
उत्तर
The plants absorb much more water than their requirement because:
(a) They require more mineral salts for their growth and minerals are present in very small quantity in water
(b) Most of the water is lost through transpiration. Therefore, to prevent wilting they require an excess of water.
APPEARS IN
संबंधित प्रश्न
Suppose you have a small rose plant growing in a pot. How would you demonstrate transpiration in it?
Answer the following (only in few words);
Where does transpiration take place in leaves? Give names of the various parts.
Distinguish between the following:
Transpiration and evaporation
Choose the correct answer:
In herbaceous plants, following percentage of absorbed water comes out __________
Explain the Term :
Wilting
Differentiate Between Transpiration and Guttation.
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental set-up was placed in bright sunlight. Study the diagram and answer the following questions:
- Name the process intended for the study.
- Define the above mentioned process.
- When the weight of the test tubes (A and B) is taken before and after the experiment, what is observed? Give reasons to justify your observations in A & B.
- What is the purpose of keeping the test tube B in the experimental set-up?
- What is the purpose of putting oil in the test tube?
