Name …………………………………………….
……Class
………………………………………………...
231/ 1 Candidate’s Signature ………………….
…...………..
BIOLOGY
Paper 1 Date
…………………..
(Theory)
March/ April2017
2 hours
Kenya Certificate of Secondary Education (KCSE)
MINI-MOCK EXAMINATION
Instructions to candidates
(a) Write your name and class in the spaces provided above.
(b) Append your signature and write the date of examination in the
spaces provided above.
(c) Spelling errors especially of Biological terms shall be penalized
(d) Answer ALL questions in the spaces provided.
(e) Candidates should check the question paper to ascertain that ALL
the pages & questions are printed as indicated and that no
questions are missing
FOR EXAMINER’S USE ONLY
Question Maximum Score Candidate’s Score
1 – 38 80
1
Attempt ALL the questions in the spaces provided only.
1. Name the apparatus shown below……………………………………….….(1
mark)
2. The Photograph below represents a certain member of the kingdom
Animalia
a) Name the taxonomic class t o which the animal belongs
(1 mark)
b) On the diagram, label three features in which are characteristics
of organisms in the class named in (a) above.
(3 marks)
3. Plant cells contains both a cell wall and a cell membrane. What is the
composition of
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the cell wall, and where is it located in relation to the cell membrane?
(2marks)
Composition……………………………………………………………………………
Location ……………………………………………………………………………….
4. (a) Identify the photograph below…………………………………… (1
mark)
(b) Outline in two steps how to use the apparatus shown in the
photograph
(2marks)
5. For each of ceil organdies state ONE function and how it is ONE
adaptation to carrying out the function.
(a). Ribosomes. (2
marks)
Function………………………………………………………………………
Adaptation…………………………………………………………………
b) Lysosomes (2 marks)
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Function…………………………………………………………………………
…
Adaptation……………………………………………………………………….
..
6. For the specialized plant cells shown below identify the cell, state the
function and how it is adapted to carrying out the function.
(3 marks)
Name………………………………………………………………….
…………………...
Function………………………………………………………………………………….
..
Adaptation. …………………………………………………..
…………………………...
7. A nursing infant is able to obtain disease-fighting antibodies, which are
large
protein molecules, from its mother's milk. These molecules probably
enter the cells lining the baby's digestive tract via
(1 mark)
4
………………………………………………………………………………………………
………………………………………………………………………………………………
8. A manufacturing company dumps its wastes into a nearby pond. One
of the wastes is found to paralyze the contractile vacuoles of certain
protists. A biologist looking at these organisms would find that these
protists. (2 marks)
………………………………………………………………………………………………
………………………………………………………………………………………………
9. Use the human digestive diagram and your knowledge of the living
environment to answer questions below.
a) A painful condition resulting from the formation of small stone-
like deposits of cholesterol may be treated by surgically
removing structure labeled.
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
b) Which letter indicates the organ that secretes hydrochloric acid
and a protease enzyme?
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
c) Which substance is normally absorbed by structure labelled F?
(1 mark)
………………………………………………………………………………………
10. Name the hormone that is responsible for the development of a.
deep voice in humans.
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(1 mark)
……………………………………………………………………………………………..
11 The type of relationship between fungi and algae in lichen is best
described as:
(1 mark)
……………………………………………………………………………………………..
12 Name the group of bacteria found in the root nodules of leguminous
plants.
(1 mark)
…………………………………………………………………………………………….
13 Name the site of the cell that does each of die following processes
take place?
(2 marks)
Glycolysis:
………………………………………………………………………………………
Krebs cycle:
………………………………………………………………………………………
14. Name the structure used for excretion in fresh water Amoeba
histolytica, (1 mark)
…………………………………………………………………………………………….
15. Mention four mechanisms of excretion in terrestrial green plants.
(4 marks)
……………………………………………………………………………………………..
…………………………………………………………………………………………..…
16. Name the gamete cell that are produced by ovaries,
(1 mark)
………………………………………………………………………………………
17. List four abiotic factors in a soil ecosystem. (4
marks)
………………………………………………………………………………………………
………………………………………………………………………………………………
………………………………………………………………………………………………
18. What is a facultative anaerobe? (1
mark)
………………………………………………………………………………………
19. What is meant by single circulatory system? (1
mark)
………………………………………………………………………………………
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20. What is a test cross in genetics? (2
marks)
………………………………………………………………………………………………
………………………………………………………………………………………………
21. Give the scientific name of the bacterium that causes tuberculosis in
humans.
(1 mark)
………………………………………………………………………………………………
………………………………………………………………………………………………
22. (a) Name assimilated substances that undergo no digestion. (2
marks)
………………………………………………………………………………………
………………………………………………………………………………………
………………………………………………………………………………………
(b) Explain why the substances named in (a) above undergo no
digestion.
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
………………………………………………………………………………………
23. Which part of the ovule forms the following structures after
fertilization?
(2 marks)
Endosperm
………………………………………………………………………………………………
………………………………………………………………………………………………
Testa
………………………………………………………………………………………………
………………………………………………………………………………………………
24. Distinguish between homologous and analogous structure. (1
mark)
………………………………………………………………………………………………
………………………………………………………………………………………………
25. The process by which living organisms transfer oxygen into their
bodies and release Carbon(VI) oxide into the environment is called?
(1 mark)
7
………………………………………………………………………………………………
………………………………………………………………………………………………
26. (a) Name requirements of a plant to carry out photosynthesis
other than
water and carbon (IV) oxide. (1
mark)
………………………………………………………………………………………
………………………………………………………………………………………
(b) Give the importance of mosaic leaf arrangement in
photosynthesis.
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
27. State morphological features that a grasshopper, a crab and a
spider have in common.
(1 mark)
………………………………………………………………………………………………
………………………………………………………………………………………………
28. State three ways of mechanically digesting a mandazima mammal. (3
marks)
………………………………………………………………………………………………
………………………………………………………………………………………………
29. The Malpighian layer cells of a mammal contain 48,000 alleles in total.
How many alleles would have been inherited from the organism's
maternal parent?
(1 mark)
………………………………………………………………………………………………
………………………………………………………………………………………………
30. Other than direct drinking of water, name two other sources of water in
nutrition
of man. (2 marks).
8
………………………………………………………………………………………………
………………………………………………………………………………………………
31. State the role of the Pleural fluid of mammalian lungs. (1
mark)
………………………………………………………………………………………………
………………………………………………………………………………………………
32. Give reasons why African Bush Elephants (Loxodonta africana) unlike
garden peas (Pisum sativum), are not suitable subject for genetic
studies. (1 mark)
………………………………………………………………………………………………
………………………………………………………………………………………………
33. Identify each of the genetic disorders in man, characterized by the
symptoms described below,
(a) Inability to distinguish between blue and green colour and
various shades of red. (1
mark)
………………………………………………………………………………………
………………………………………………………………………………………
(b) Lack of the protein dystrophin resulting in a progressive
weakening of body muscles and uncoordinated body movement.
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
34. (a) Biology students found that during germination of cowpea seeds,
9.00 cm3
of oxygen was used while 9.2 cm3 of carbon (IV) oxide was
produced. Calculate the RQ.
(2 marks)
………………………………………………………………………………………
………………………………………………………………………………………
………………………………………………………………………………………
(b) Identify the food substance that was metabolized in the cowpea
seed. (l
mark)
………………………………………………………………………………………
………………………………………………………………………………………
9
35. Under what conditions is carboxyhaemoglobin formed in the human
blood.
(1 mark)
………………………………………………………………………………………………
………………………………………………………………………………………………
36. To estimate the population of Tilapia using the capture recapture
method, 230 fish were captured marked and released. In the second
capture, out of 112 fish, 10 had been marked. Calculate the estimated
population of Tilapia, (Show your working).
(2 marks)
………………………………………………………………………………………………
………………………………………………………………………………………………
………………………………………………………………………………………………
………………………………………………………………………………………………
………………………………………………………………………………………………
………………………………………………………………………………………………
37. The photograph below shows a fruit specimen dispersed by a certain
agent. Study the photograph carefully and then answer the
questions that follow.
a) What type of fruit is represented by the photograph above?
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
10
b) On the photograph, name each of the parts labeled A & B.
(l mark)
c) Name the agent of dispersal of the fruit.
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
d) What is the economic value of the dispersal mentioned in (e)
above.
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
38. Albinism, lack of pigmentation in humans, results from an
autosomal recessive allele designated ‘’a’’. Two parents with normal
pigmentation have an albino child.
(a) What is the probability that their next child will be albino?
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
(b) What is the probability that the next child will be an albino
girl?
(1 mark)
………………………………………………………………………………………
………………………………………………………………………………………
11
