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Solved 2016 Question Paper ICSE Class 10 Biology — Question 4

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Question 3(b)

The diagram of an apparatus given below demonstrates a particular process in plants. Study the same and answer the questions that follow: [5]

The diagram of an apparatus given below demonstrates a particular process in plants. Study the same and answer the questions that follow. Name the apparatus. Which phenomenon is demonstrated by this apparatus? Explain the phenomenon mentioned in (ii) above. State two limitations of using this apparatus. What is the importance of the air bubble in the experiment? Name the structures in a plant through which the above process takes place. ICSE 2016 Biology Solved Question Paper.

(i) Name the apparatus.

(ii) Which phenomenon is demonstrated by this apparatus?

(iii) Explain the phenomenon mentioned in (ii) above.

(iv) State two limitations of using this apparatus.

(v) What is the importance of the air bubble in the experiment?

(vi) Name the structures in a plant through which the above process takes place.

Answer

(i) Ganong's Potometer

(ii) Transpiration

(iii) It is the loss of water as water vapour from the aerial parts of the plant.

(iv) Two limitations of using Ganong's Potometer are:

  1. Introducing the air bubble is not very easy.
  2. The twig may not remain fully alive for a long time.

(v) The movement of the air bubble gives the volume of water lost in a given time.

(vi) Stomata, Lenticels, Cuticle.