THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL
CERTIFICATE OF SECONDARY EDUCATION EXAMINATION
033/1 BIOLOGY 1
(For School Candidates Only)
TIME: 3 HOURS Thursday, 07 th November 2013 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 writing should be done using a blue or black pen.
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)
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.
(i) Animals which are able to maintain fairly constant body temperature are described as
(ii) Night blindness in the human body is avoided by eating
(iii) A blood vessel which conveys deoxygenated blood away from the heart is called
(iv) The function of cones in the human eye is to
(v) A term used to identify an individual animal having both male and female sex organs is
(vi) Which of the following structures is a site of respiration?
(vii) The structures found in bacteria are A plasmid, flagella and cilia
(viii) The by products in the photosynthesis process are
(ix) The factors which contribute to the spread of dental cavities in human being include
(x) The main feature observed in prokaryotic is that they
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. Each choice in column B may be used once, more than once or not at all.
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 three (3) and six (6) which carry 6 marks each.
3. (a) What do you understand by the term “Botany”?
View Ans(b) Briefly explain five characteristic of living things.
View Ans4. (a) State the conditions necessary for seed germination and briefly describe how they facilitate germination.
View Ans(b) Differentiate epigeal germination from hypogeal germination.
View Ans5. (a) Define the term “irritability.”
View Ans(b) Describe the neuronic pathway taken by reflex actions in human being.
View Ans6. (a) Give the meaning of osmosis and diffusion.
View Ans(b) Briefly explain how the following illustrates osmosis.
Shrinking of a cell when immersed in a high concentrated solution.
Bursting of red blood cell when immersed in dilute solution.
7. (a) Name and explain any four theories of the origin of life.
View Ans8. (a) What is the meaning of the terms:
Digestion
Malnutrition
Balanced diet
Nutritional disorder
(b) Outline four types of nutritional deficiency disorders in human beings.
View Ans9. (a) Give the meaning of the following:
Continuous and discontinuous variations.
Inherited and acquired variations.
(b) Briefly explain how mutation and nutritional factors cause variation among organisms.
View Ans10. (a) Explain two factors affecting gaseous exchange in animals.
View Ans(b) Why does a fish die when taken out of water to land while a frog survives in both water and on land?
View AnsSECTION C (20 Marks)
Answer one (1) question from this section.
11. Give four common accidents at home and school, for each case explain the causes and three prevention measures.
View Ans12. Explain four ways of transmission, symptoms and treatment of HIV/AIDS.
View Ans13. Describe four similarities and seven differences between insect and wind pollinated flowers.
View Ans