THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL
CERTIFICATE OF SECONDARY EDUCATION EXAMINATION
033/1 BIOLOGY 1
(For Both School and Private Candidates)
TIME: 3 HOURS Wednesday, 05 th November 2014 a.m.
INSTRUCTIONS
This paper consists of three sections A, B and C.
Answer all questions from sections A and B and one (1) question from section C.
Except for diagrams that must be drawn in pencil, all writings should be in blue or black ink.
Calculators and cellular phones are not allowed in the examination room.
Write your Examination Number on every page of your answer booklet(s).
SECTION A (20 MARKS)
Answer all questions in this section.
1.. For each of the items (i) – (x), choose the correct answer from among the given alternatives and write its letter beside the item number in your answer booklet.
(i)A term which best describes a condition of a plant cell that has lost too much water is
(ii) Bowmans capsule in the kidney functions as a
(iii) A structure which controls the body balance in humans is located in the
(iv) The main product of photosynthesis process is
(v) Species with cellulose in their cells are formally placed in
(vi) Fertilization process is defined as
(vii) Mutual interaction between two species is described by which of the following characteristic
(viii) One of the characteristics used to identify producers in the ecosystem is
(ix) The role of the optimum temperature in cellular activities is to
(x) Rise of body temperature in the human body is corrected mainly by
2. Match the responses in List B with the phrases in List A by writing the letter of the correct response from List B beside the item number of List A in your answer booklet.
LIST A | LIST B |
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SECTION B (60 Marks)
Answer all questions in this section.
Each question carries 8 marks except question five and six which carry 6 marks each.
3. (a) State three actions which take place in the human body in response to each of the following conditions:
When the temperature of the surroundings is low.
When the body temperature rises due to increase in the surrounding temperature.
(b) Briefly explain why people look pale when they feel cold.
View Ans4. (a) Give the meaning of the following terms and identify two examples for each:
Waste
An accident
(b) Elaborate four procedures of giving First Aid to a person who has been injured in a bus accident and has severe bleeding.
View Ans5. (a) What do you understand by the following terms:
Evolution
Acquired characteristics
(b) Outline merits and demerits of Lamercks theory of evolution.
View Ans6. (a) Explain the functions of the vascular system in plants
View Ans(b) State three importance of transportation of materials in living things.
View Ans7. (a) In the experiment conducted on single factor inheritance, individuals which were male homozygous tall married a female who was homozygous dwarf. The gene for tall was dominant over dwarf. Use the crosses to find out the possibility of the phenotypic results and the ratio in the first filial generation.
View Ans(b) Give the meaning of the following:
Test cross
Back cross
Trait
8. (a) Define the following terms:
Meiosis
Mitosis
Growth
(b) (i) Explain the significance of mitosis in growth
(ii) State three factors affecting growth in humans.
View Ans9. (a) Draw a large and neat labelled diagram of the villus found in the digestive system.
View Ans(b) (i) Name the digestive juice which is produced by the liver.
(ii) State the function of the substances contained in the digestive juice named in b (i).
View Ans10. (a) Differentiate the following:
Breathing and respiration
Inhalation and exhalation
(b) Briefly describe the following phenomenon:
A person breathes more when running fast.
The ribs move outwards and upwards while the diaphragm flattened when air enters the lungs.
SECTION C (20 Marks)
Answer one (1) question from this section.
Explain any four effects of irresponsible sexual behaviour and suggest five ways of eradicating those behaviours in the community.
Describe how malaria parasites are transmitted, the sign developed to the host and give four ways which can help in combating malaria in the country.
Explain two differences between artificial and natural classification systems and indicate the two merits and demerits for each system..