Advertisements
Advertisements
Question
Write the functional activity of the following structure:
Hydathodes
Advertisements
Solution
Plants secrete an excess of water through hydathodes when the atmosphere is very humid and the transpiration process cannot occur.
RELATED QUESTIONS
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Atmospheric humidity promotes transpiration from a green plant.
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Most transpiration occurs during midday.
Answer the following (only in few words);
When does stomatal transpiration take place in plants?
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?
Briefly explain how the rate of transpiration is affected by:
Humidity of the atmosphere
Give Reasons for the following:
Transplanting of seedlings to a flowerbed in the evening is better than doing so in the morning.
Give Reasons for the following:
Young plants wilt on a hot sunny day.
What are the disadvantages of transpiration?
Differentiate Between Cuticular and Lenticular transpiration.
Write the functional activity of the following structure:
Cuticle
