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Form 4 Term 2 2015 Biology Paper 1 Exam Set 4 [PDF]

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Question 1

State the importance of the following parts of a microscope
  1. Clip.
  2. Coarse adjustment knob
Answer
  1. Hold the slide firmly on the stage
  2. Raises or lowers the body tube for longer distance to bring the image into focus
Question 2

  1. Explain why larmacks theory of evolution was not accepted by the modern Biologists.
  2. Define the following terms
    1. Analogus structures
    2. Divergent evolution
Answer
  1. Acquired characteristics cannot be inhibited; if they don’t affect the genotypes
    1. Analogus Structure-Are structures from different embryonic origin that are modified to perform some function
    2. Divergent evolution-basic structural forms are modified to give rise to various differences-modified to perform different functions
Question 3

State the functions of the following plant tissues
  1. Collenchyma
  2. Sclerenchyma.
Answer
  1. Collenchyma-for strengthening
  2. Sclerenchyma-for strengthening
Question 4

State two importance of roughages in the process of digestions of food.
Answer
-Add bulk to food
-Promote peristalsis
Question 5

Identify the cells that produce the following
  1. Mucus
  2. Pepsin and renin
  3. Hydrochloric acid
Answer
  1. Mucus-goblet alls
  2. Pepsin/rennin-peptic cells
  3. Hydrochloric acid-oxyntic cells
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- Form 4 Term 2 2015 Biology Paper 1 Exam Set 4 [PDF]