Advertisements
Advertisements
Question
Differentiate Between Transpiration and Evaporation.
Solution
Transpiration | Evaporation |
Loss of water in the form of vapour from aerial parts of the plant. | Loss of water from the surface of the water bodies in the form of vapour. |
It is vital and partly a physical process controlled by both internal and external factors. | It is a physical change controlled by the temperature and humidity of the atmosphere. |
It is a slow process. | It is a fast process. |
APPEARS IN
RELATED QUESTIONS
Name the factors which affect the rate of transpiration? State their role in each case.
Why are the stomata in most plants more numerous on the lower surface of a leaf instead of being on the upper surface?
The diagram alongside represents a structure found in a leaf. Study the same and answer the questions that follow:
(i) Name the parts labeled A and B.
(ii) What is the biological term for the above structure?
(iii) What is the function of the part labeled A?
(iv) Mention two structural features of A, which help in the function mentioned in (iii) above?
(v) Where is this structure likely to be found in a leaf?
(vi) The structure (fig.5.22) helps in the process of transpiration. Explain the term transpiration.
(vii) How many other cells are found surrounding this structure as seen in the diagram?
What are lenticels? Where are they found?
Study the diagram given alongside and answer the questions that follow:
(i) Explain the physiological process of being study.
(ii) What will be the observations in the two test-tubes after about 2-3 days?
(iii) Give a reason for your answer in (ii) above.
(iv) Why is the surface of water covered with oil?
(v) State the purpose of setting up test tube B.
Mention, if the following statement is True or False. If false rewrite the wrong statement in its correct form:
Transpiration is a physiological process
State the Location:
Hydathodes
Write the functional activity of the following structure:
Cuticle