ICSE 2006 : SCIENCE Paper 3 (Biology) -

SCIENCE
Paper 3 (Biology) - 2006
(One hour and a half)

Question 4
(a) The diagram given below shows the internal structure of the lamina and midrib of a leaf. Study the same and answer the questions that follow:-
Internal structure of a leaf

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Your Performance

1.
(i) Is the above section that of an isobilateral or dorsiventral leaf? Give a reason to support your answer.

2.
(ii) Name the parts 1, 2, 3 and 4 indicated by the guidelines.

3.
(iii) What is the function of the part labelled 3?

4.
(iv) Explain how part 3 performs the function mentioned by you.

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