SECTION A
QUESTION 1
1.1 Various options are provided as possible answers to the following questions. Choose the
correct answer and write ONLY the LETTER (A-D) next to the QUESTION NUMBER (1.1.1-
1.1.5) on your answer sheet, for example 1.1.6. D.
1.1.1 Which of the following micro-organisms act as decomposers in ecosystems?
(i) Bacteria
(ii) Protista
(iii) Fungi
(iv) Viruses
A (i) and (iii)
B (ii) and (iii)
C (i) and (iv)
D All of the above
1.1.2 Malaria is spread by:
A Female Anopheles mosquito
B Male Plasmodium
C Blood transfusions
D None of the above
1.1.3 Protista are unlike bacteria in that they…
A always photosynthesise
B are unicellular
C are produced by binary fission
D are eukaryotic
1.1.4 Which statement best describes the relationship between a parasite and its host?
A The parasite is harmed while the host benefits
B The host is harmed while the parasite benefits
C Both host and parasite benefit
D The parasite benefits and the host is not affected at all
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, 1.1.5 The following statements about HIV are NOT true:
(i) Some people with the HI virus do not show any symptoms at all.
(ii) People can get HIV from being bitten by mosquitoes.
(iii) HIV can be spread from an infected mother to her child during childbirth.
(iv) The early symptoms of HIV infection are the same as that of other diseases.
A (i) and (ii)
B (ii) and (iv)
C (ii) only
D None of the above
[5x2=10]
1.2 Give the correct BIOLOGICAL TERM for each of the following descriptions. Write only the
correct TERM next to the QUESTION NUMBER (1.2.1-1.2.4) on your answer sheet.
1.2.1 A bacterium which does not cause harm but is useful.
1.2.2 A virus that infects a bacterium cell.
1.2.3 The cellular extension which allows amoeba to move and catch prey.
1.2.4 Using living organisms to control harmful populations. (4)
1.3 Indicate whether each of the statements in COLUMN I applies to A ONLY, B ONLY, BOTH
A and B or NONE of the items in COLUMN II. Write A ONLY, B ONLY, BOTH A and B or
NONE next to the QUESTION NUMBER (1.3.1-1.3.3).
Column I Column II
1.3.1 Presence of a slime A Bacteria
capsule and well- B Viruses
structured nucleus
1.3.2 A disease caused by A Athlete’s foot
fungi B Blight
1.3.3 Binary fission is the A Bacteria
asexual production B Protista
of…
[3x2=6]
SECTION A: [20]
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Grade 11 March Paper