THE UNITED REPUBLIC OF TANZANIA NATIONAL EXANIINATIONS COUNCIL OF TANZANIA

CERTIFICATE OF SECONDARY EDUCATION EXAMINATION

033/1 BIOLOGY 1

(For Both School and Private Candidates)

Time: 3 Hours Year: 2020

Instructions

l . This paper consists of sections A, B and C with a total of fifteen (15) questions.

2.Answer all the questions in the sections A and B and two (2) questions from section C of which question 13 is compulsory.

3.Section A carries fifteen (15) marks, section B sixty (60) marks and section C carries twenty five (25) marks.

4.All writing should be in blue or black pen, except for diagrams that must be drawn in pencil.

5.Cellular phones and any unauthorized materials are not allowed in the examination room.

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

SECTION A (15 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 provided.

(i)What is the main product of anaerobic respiration in plants?

1. Uric acid 
2. Lactic acid 
3. Water 
4. Alcohol 
5. Pyruvic acid

(ii)Suppose you are provided with small sections of cells from different organisms, which equipment will you use to identify them?

1. Test tube
2. Watch glass
3. Microscope
4. Petri dish
5. Beaker

(iii) In which Phylum do filarial worms belong?

1. Annelida
2. Nematoda
3. Arthopoda
4. Platyhelminthes 
5. Chordata

(iv)Which nutritional disorder may result when a person takes larger quantities of carbohydrate than body's requirements?

1. Rickets
2. Marasmus
3. Beriberi
4. Kwashiorkor
5. Obesity

(v)What is the role of the cerebrum in human beings?

1. Breathing
2. Sneezing
3. Yawning 
4. Learning
5. Walking

(vi)In which specific part of the female reproductive system is tubal ligation applied as a method of birth control?

1. Oviduct
2. Uterus
3. Cervix 
4. Ovary 
5. Vagina

(vii)Why a faint victim should be laid down with the head lower than the feet when rendering First Aid?

1. The body needs minerals
2. The brain needs oxygenated blood
3. The body needs nutrients
4. The lung needs deoxygenated blood 
5. The victim needs carbon dioxide

(viii)Which of the following structures of organisms are homologous? 

1. Wings of birds and wings of grasshoppers
2. Forelimbs of man and wings of butterfly
3. Wings of houseflies and wings of bat
4. Wings of bees and forelimbs of man
5. Forelimbs of man and wings of bat

(ix)Why is transfusion of blood from a donor with group O to a recipient with blood group AB successful?

1. The recipient's blood has no antibodies.
2. The recipient's blood has no antigens.
3. The donor's blood has many antigens.
4. The donor's blood has many antibodies. 
5. The recipient's blood has antigen O.

(x)Study the following groups of organs and answer the question that follows:

(i)Tongue, stomach, liver and the intestine.

(ii)Stomach, tongue, heart and liver.

(iii)Urethra, urinary bladder, ureter and kidney.

(iv)Urinary bladder, kidney, tongue and heart.

Which combination forms a system?

1. (i) and (ii) 
2. (i) and (iv) 
3. (i) and (iii) 
4. (ii) and (iv) 
5. (ii) and (iii)