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प्रश्न
Which of the following statements are true and which ones are false? Give reason in support of your answer.
Hydathodes are similar to stomata in plant physiology.
पर्याय
True
False
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उत्तर
False
Reason: Hydathodes are special pores present on the ends of leaf veins through which guttation occurs and water droplets are given out. Their openings cannot be regulated. Stomata on the other hand are minute openings in the epidermal layer of leaves through which exchange of gases as well as transpiration occurs. Water is given out as water vapour. Stomatal opening is regulated by guard cells.
संबंधित प्रश्न
Answer the following (only in few words);
Where does transpiration take place in leaves? Give names of the various parts.
Answer the following (only in few words);
Give one important difference between transpiration and evaporation.
Choose the correct answer:
In herbaceous plants, following percentage of absorbed water comes out __________
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:
Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening?
Explain the Term
Transpiration
Differentiate between transpiration and guttation.
Give Technical Term
The apparatus used to compare the rate of transpiration in cut shoot.
Write the functional activity of the following structure:
Cuticle
An outline sketch of a tree is shown in a diagram below. Study the same and answer the questions that follow:
- Name and define the phenomenon labelled A in the diagram.
- Write the significance of the process mentioned in A for the plants.
- What do the direction of the arrows in B and C indicate? Name the phenomena.
- Draw a neat and labelled diagram of an opened stomata.
