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Form 4 Term 2 2010 Biology Paper 1 Exam Set 17 [PDF]

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Question 1

  1. State two functions of the centriole
  2. How is the aerenchyma tissue adapted to its functions?
Answer
  1. Formation of spindle fibres
    Formation of cilia
  2. Large air spaces for buoyancy / storage of respiratory gases; gaseous exchange;
Question 2.

Name a characteristic in humans which is controlled by multiple alleles
Answer
A B O blood grouping
Question 3

To which class does an animal with two body parts and four pairs of legs belong?
Answer
Arachinida
Question 4

Explain why Xylem vessels do not collapse even when they do not contain water
Answer
Thickened walls / Lignin deposition on wall
Question 5

State two characteristics of cells found at the apical meristems.
Answer
Dense cytoplasm;
Thin cell wall
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- Form 4 Term 2 2010 Biology Paper 1 Exam Set 17 [PDF]