THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL OF TANZANIA
CERTIFICATE OF SECONDARY EDUCATION EXAMINATION      

033/1 BIOLOGY 1 (For Both School and Private Candidates)

Time: 3 Hours Wednesday, 07^th November 2018 a.m.

Instructions

1. This paper consists of sections A, B and C with a total of thirteen (13) questions.

2. Answer all questions in sections A and B and one (1) question from section C.

3. Except for diagrams that must be drawn in pencil, all writing should be in blue or black ink.

4. Calculators, cellular phones and any unauthorized materials are not allowed in the examination room.

5. Write your Examination Number on every page of your answer booklet(s).

SECTION A (20 Marks) 

Answer all questions in this section.

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 the answer booklet.

(i) Mitosis normally takes place in

1.  reproductive cells
2.  animal cells only 
3.  blood plasma 
4.  plant cells only
5.  somatic cells.      

(ii) Which of the following is the symptom of the disease caused by lack of protein in children?

1. Anemia 
2. Swollen head 
3. Breeding 
4. Pale and thin hair 
5. Sneezing.         

(iii) flow many gametes are produced from one cell during meiosis?

1. Eight 
2. Two  
3. Four 
4. Six 
5. Ten.         

(iv) Which of the following is the excretory organ in human?

1. Mouth 
2. Kidney 
3. Pancreas 
4. Stomach 
5. Anus.         

(v) Which of the following hormones stimulates seed germination in plants?

1. Gibberellins 
2. Auxin 
3. Cytokinins 
4. Abscisic acid 
5. Ethene.         

(vi) A joint which allows rotation in all planes is called

1.  suture
2.  ball and socket
3.  pivot
4. ligament
5.  hinge.

(vii) In which environmental condition the loss of water vapour from plants is mostly favourable? 

1. Hot and Windy day 
2. A saturated atmosphere 
3. Cool and dry atmosphere 
4. Windy day 
5. Hot day.      

(viii) The function of the bright coloured petals in flowers is

1. to store nectarines 
2. to hold sepals in position 
3. to produce colour of the flower 
4. to receive pollen grain 
5. to attract insects for pollination.      

(ix) The function of hydrochloric acid in food testing experiment is

1. to decolourise food sample 
2. to test reducing sugar 
3. to oxidize the food sample 
4. to neutralize sugary foods 
5. to hydrolyze complex to simple sugar.         

(x) The interaction between two species in which both organisms benefit is known as

1. ectoparasite 
2. parasitism 
3. commensalisms 
4. mutualism 
5. endoparasite.