Advertisements
Advertisements
Question
What are the advantages of transpiration to the plant?
Solution
(i) It results in the ascent of sap by creating a suction force.
(ii) It results in the cooling of the plant in summer.
(iii) It helps in the distribution of water to all parts of the plants.
(iv) It helps in the elimination of the excess of water absorbed by the roots.
APPEARS IN
RELATED QUESTIONS
Why are the stomata in most plants more numerous on the lower surface of a leaf instead of being on the upper surface?
Answer the following (only in few words);
When does stomatal transpiration take place in plants?
Choose the correct answer:
The cause of wilting is more ___________
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.
Define the above mentioned process.
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.
When the weight of the test tubes A and B is taken before and after the experiment, what change is observed? Justify.
The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.
What is the purpose of keeping the test tube B in the experimental setup?
Give Reasons for the following:
Young plants wilt on a hot sunny day.
Explain the Term
Transpiration
The following diagram is set up to demonstrate an experiment.
Five plants A, B, C, D, and E were placed in a beaker containing water. The water in each beaker was covered with a layer of oil. The leaves were removed from plant D in plant B, upper surfaces of all the leaves were covered with Vaseline, in-plant C the lower surfaces of all the leaves were covered with Vaseline and plant E was exposed to strong light. The beakers were then left for a few hours and at the end of the experimental period, weights of each beaker were taken.
Write the correct answer out of the five available choices given under each question:
I. In which beaker would you expect the greatest decrease in weight?
(i) A (ii) B (iii) C (iv) D (v) E
II. In which beaker the change of weight would be minimum?
(i) A (ii) B (iii) C (iv) D (v) E
III. Which plant would remain healthy for a longer period of time?
(i) A (ii) B (iii) C (iv) D (v) E
IV. In this experiment which plant can be considered as the uncontrolled one?
(I) A (ii) B (iii) C (iv) D (v) E
V. The difference of weight would b maximum between:
(i) A and B (ii) A and C (iii) A and D (iv) A and E (v) D and E
Mark the most appropriate answer in the following:
Transpiration is very low during storms due to:
