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प्रश्न
The figure below represents the vertical section of a leaf:
(i) Name the parts labeled 1 to 5.
(ii) What do the two arrows (dotted and solid) indicate in the day time and at night?
(iii) Could you add one more arrow in the figure? If yes, what for?
(iv) How many leaf veins have been shown in this section?
उत्तर
(i)
- Cuticle,
- Upper epidermis,
- Palisade tissue,
- Spongy parenchyma,
- Guard cell of a stoma.
(ii) In the day time dotted arrow shows the path of CO2 while solid arrow shows the path of oxygen. A night dotted arrow shows the path of oxygen while the solid arrow shows the path of CO2:
(iii) Yes, we can add one more arrow in the figure to show the loss of water during transpiration.
(iv) Only one leaf vein has been shown in this section.
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संबंधित प्रश्न
Explain the Term
Stomatal transpiration
Differentiate Between Stomata and Hydathodes.
Given below is an experimental set up to study a particular process:
(i) Name the process being studied.
(ii) Explain the process named in (i) above.
(iii) Why is the pot covered with a plastic sheet?
(iv) Mention one way in which this process is beneficial to the plant.
(v) Suggest a suitable control for this experiment.
Given below is the diagram of an experimental set up to study the process of transpiration in plants. Study the same and then answer the questions that follow:
(i) What is the colour of dry cobalt chloride paper?
(ii) Is the experimental leaf a monocot or a dicot? Give a reason to support your answer.
(iii) Why axe glass slides placed over the dry cobalt chloride papers?
(iv) After about half an hour what change, if any, would you expect to find in the cobalt chloride paper placed on the dorsal and ventral sides of the leaf? Give a reason to support your answer.
(v) Define the term ‘transpiration’.
Give Technical Term
Opening found on the undersurface of the dorsiventral leaf.
State the Location:
Guard cells
How will you differentiate the different types of transpiration?
Give a reason/suitable explanation.
More transpiration occurs from the under surface of a dicot leaf.
Give a reason/suitable explanation.
Leaves of some plants wilt during midday and recover in the evening.
