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KCSE BIOLOGY 2008 PAPER 3 QUESTIONS
PRACTICAL
Below is a photograph of a dissected mammal. Examine the photograph
(a) Name the parts labeled A, B, C D and G ( 5 mks)
(b) State the function of the structures labeled E and F ( 1 mk)
(c) In the photograph label the structure where vitamin K is produced ( 1 mk)
(d) (i) Name the sex of the mammal in the photograph ( 1 mk)
(ii) Give a reason for your answer in (d) (i) above ( 1 mk)
(e) (i) The actual length of the dissecting scissors in the photographs is 15 cm
Calculate the magnification of the photograph ( 2 mks)
(ii) Calculate the actual length of the mammal from the tip of the nose to
point X on the tail ( 2 mks)
2. You are provided with substance labeled S,T,U X and Y. S, T and U are food substance. While X is 10% sodium hydroxide solution and Y is 1% copper sulphate solution. Carry out tests to determine the food substance (s) in S. T and U. ( 9 mks)
Substance | Food substance being tested for | Procedure | Observations | Conclusion |
S | ||||
T | ||||
U |
3. Below are photographs of specimens obtained from plants. Examine the
photographs
Specimen | Mode of dispersal | Adaptive features |
K
| ||
L
| ||
M
| ||
N
| ||
P
| ||
Q
|
- (i) Label any two parts on specimen L ( 2 mks)
(ii) State the type of placentaion in specimen L ( 1 mk)
- Name the structure labeled W on specimen P ( 1 mk)