(English Medium) ICSE Class 10 - CISCE Question Bank Solutions for Biology

Distinguish between the following:
Transpiration and evaporation

Mark the most appropriate answer in the following:

Transpiration pull will be maximum under which of the following conditions?

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?

Choose the correct answer:

The cause of wilting is more ___________

Choose the correct answer:

Transpiration is more ____________

Choose the correct answer:

In herbaceous plants, following percentage of absorbed water comes out __________

Choose the correct answer:

Transpiration generates __________

Choose the correct answer:

Who had said that "transpiration is a necessary evil"?

An experiment was set up as shown in the figure given below . The twig in the diagram was intact on the plant and it was as such in sunlight for a few hours .

(i) What is the aim of the above experiment ? 
(ii) Why was potassium hydroxide placed inside the conical flask ?
(iii) What test would you perform on the leaf inside the flask?
(iv) What is the expected result of the above test ?
(v) Is it necessary to similarly test on outer leaf also ? Giva a reason .

Describe fully one experiment with potted green plant to show that starch is not produced in the leaves when carbon dioxide is not available (diagrams essential)

A healthy oat seeding in a pot is transferred from light to any airy but completely dark room. How would it differ from its original condition in appearance after about a week? Explain the difference.