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: 2022

Instructions

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

2. Answer all 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.

l . 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 component of the nervous system receives impulses from receptors?

1. Response 
2. Effector 
3. Relay 
4. Motor 
5. Coordinator

(ii) Which of the following is the proper method for disposing plastic bottles?

1. Landfill 
2. Incineration 
3. Burying 
4. Recycling 
5. Pit latrine

(iii) An individual who is riding a bicycle can waste a lot of water through sweating. Which of the following organs is responsible for the water loss?

1. Stomach 
2. Kidney 
3. Skin 
4. Liver 
5. Lungs

(iv) In the cowshed, a red furred cow mates with a white furred bull. In Ft generation all cows were red furred. What does this suggest about fur colour in cow?

1. Incomplete dominance 
2. Co-dominance 
3. Multiple allelism 
4. Complete dominance 
5. Partial dominance

(v) Which of the following parts allow water to enter into the seed before germination?

1. Testa 
2. Plumule 
3. Radicle
4. Cotyledon 
5. Micropyle

(vi) In natural selection, which types of characteristics are affected?

1. Inherited 
2. Acquired 
3. Survived
4. Dominant 
5. Recessive

(vii) Which process allows absorption of water and mineral salts from the soil in plants?

1. Diffusion 
2. Osmosis 
3. Irritability
4. Mass now 
5. Regulation

(viii) Why spiders and scorpions are placed in the same class?

1. They have three pairs of legs 
2. They have a pair of wings 
3. They have a pair of chelicera 
4. They have three body parts 
5. They have two pairs of antennae

(ix) Straightening and bending of the arm involve contraction of the biceps and triceps muscles. Which of the following alternatives describes the state of muscles when human arm is bent?

1. Biceps muscles contract while triceps relax 
2. Triceps muscles contract while biceps relax
3. Both the biceps and triceps muscles relax 
4. Biceps muscles relax while triceps contract
5. Both biceps and triceps muscles contract

(x) Which features are found in both plant and animal cells?

1. Chloroplast, cell wall and cell membrane
2. Cell membrane, nucleus and cytoplasm
3. Vacuole, cell membrane and cell wall 
4. Cell wall, chloroplast and vacuole
5. Chloroplast, nucleus and cell wall