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 Year: 2021

Instructions

1. This paper consists of sections A, B and C with a total of fifteen (15) questions.
2. Answer all the questions in sections A and B and two (2) questions from section C of which question number 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 unauthorised 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.

I 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) Which respiratory surface is used for gaseous exchange in tadpoles?

1. Spiracles
2. Gills
3. Lungs 
4. Skin
5. Book lung

(ii) Which of the following apparatuses are used for magnifying specimens?

1. Hand lens and petri dish 
2. Hand lens and watch glass
3. Microscope and watch glass
4. Microscope and hand lens
5. Measuring cylinder and beaker

(iii) Which safety precaution should be taken when administering First Aid to a wounded person?

1. Washing hands with soap 
2. Wearing protective gloves
3. Calling the ambulance for pick-up 
4. Washing the wound with soap
5. Drying the wound with clean cloth

(iv) The following are the characteristics of prokaryotes except

1. have nuclear materials. 
2. they are microscopic.
3. have nuclear membrane. 
4. have cell wall.
5. they are single celled organisms.

(v) Which of the following are the end products of digestion when lipids are digested completely?

1. Glucose and fructose 
2. Fatty acids and glucose
3. Amino acids and fructose 
4. Glucose and glycerol
5. Fatty acids and glycerol

(vi) What happens when a person moves from a bright lighted to a dim lighted room?

1. Pupil becomes large 
2. Pupil becomes small
3. Circular muscles contract
4. Radial muscles relax
5. Radial and circular muscles relax

(vii) Which of the following set of conditions is necessary for seed germination?

1. Temperature, soil and water
2. Water and carbon dioxide
3. Water, temperature and oxygen
4. Water, temperature and food
5. Soil, oxygen and water

(viii) The laboratory technician investigated the faeces of a patient and found organisms with flattened segmented bodies. What is the name of the organisms?

1. Tapeworms 
2. Roundworms
3. Liver flukes 
4. Filarial worms
5. Planaria

(ix)The following balanced habitat contains grasses, wildebeests, lions and bacteria. What would happen if lions were removed?

1. The number of bacteria would remain the same.
2. The number of wildebeest would decrease.
3. The amount of grasses would decrease.
4. The amount of grasses would increase.
5. The number of wildebeests would increase.

(x)What will happen if phloem tissue is destroyed in green plants?

1. Absorption of water in the plant body will stop.
2. Absorption of mineral salts will stop.
3. Transport of water and manufactured food will stop.
4. Transport of manufactured food will stop.
5. Transport of oxygen in the plant body will stop.