THE UNITED REPUBLIC OF TANZANIA NATIONAL EXAMINATIONS COUNCIL OF TANZANIA FORM TWO NATIONAL ASSESSMENT

033 BIOLOGY

Time 2:30 Hours Year: 2023

Instructions

1. This paper consists of sections A, B and C with a total often (10) questions.
2. Answer all questions in the spaces provided.
3. Section A carries fifteen (15) marks, section B seventy (70) marks and section C carries fifteen (15) marks.
4. All writing must be in blue or black ink except drawing which must be in pencil.
5. Cellular phones and any unauthorised materials are not allowed in the assessment room.
6. Write your Assessment Number at the top right corner of every page.

SECTION A (15 Marks)

Answer all questions in this section.

For each of the items (i) - (x),choose the correct answer from the given alternatives and write its letter in the box provided.

(i) Which branch of biology deals with the study of plants?

1. Taxonomy 
2. Botany
3. Ecology 
4. Zoology

(ii) A teacher sprayed a perfume in one corner of the classroom and after 10 minutes the entire classroom was filled with the smell of the perfume. Which process was demonstrated by the teacher?

1. Osmosis 
2. Mass flow
3. Transpiration 
4. Diffusion

(iii) Farmers in Naiva village complain of passing blood - stained urine and faeces. Which disease is likely affecting them? 

1. Gonorrhoea 
2. Cholera
3. Bilharzia 
4. Malaria

(iv) A mother went to hospital with her baby complaining of the baby's high body temperature. Which instrument will be used to examine the baby? 

1. Beam balance 
2. Thermometer
3. Stop watch 
4. Stethoscope

(v) What happens during the process of taking air into the lungs of human being?

1. Air is pushed out of the lungs 
2. The ribcage moves inwards 
3. The diaphragm contracts 
4. The diaphragm relaxes

(vi) Why is chlorophyll necessary for photosynthesis?

1. Absorbs sunlight energy 
2. Splits water molecules
3. Manufactures carbohydrate 
4. Transport water and minerals

(vii) Which practice would you recommend to control the cancer disease?

1. Having frequent blood transfusion
2. Doing regular physical exercises
3. Taking enough fibres everyday
4. Using chemo and physical therapy

(viii) Which of the following characteristics applies to members of kingdom plantae?

(i) They have cell wall made up of chitin

(ii) They feed on dead and decaying organic matter

(iii) They have cell wall made up of cellulose

(iv) They have membrane bound nucleus

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

(ix) Which foods will you recommend to a child suffering from kwashiorkor?

1. Milk, groundnuts, beans and meat
2. Milk, cassava, sorghum and wheat
3. Cabbage, spinach, cassava and eggs
4. Sorghum, cassava, rice and yams

(x) How do primary producers initiate energy flow in an ecosystem?

1. Feeds on herbivores and release nutrients
2. Converts sunlight energy into chemical energy
3. Decompose organic matter and sets energy free
4. Converts chemical energy into sunlight energy

2. Match the functions of the blood vessels in List A with the name of the blood vessels in List B by writing the letter of the correct response below the corresponding item number in a table provided.

Answer

SECTION B (70 Marks)

Answer all questions in this section.

3. (a) Identify the communicable and non-communicable diseases from the following list: Marasmus, Scurvy, Cholera, Tuberculosis, Pellagra, Leukaemia, Malaria and Syphilis. 

(i) Communicable diseases

(ii) Non communicable diseases

(b) How is each of the communicable disease sorted in (a) (i) transmitted?

4. Form Two students were asked to observe sections of plant cells using a light microscope. 

(a) Why was it necessary to use such an instrument?

(b) Draw a diagram of a light microscope and label the seven parts.

5, (a) How does a plant cell differ from an animal cell? Give four key points.

(b) What will happen if the cell membrane is severely damaged'?

6. Your community requested you to educate them about modern methods of preserving its milk, meat, tomatoes, mangoes and vegetables. Briefly explain to them four methods for preserving such products.

7. (a) Identify four components found in the First Aid kit and state the use of each one.

(b) Outline four procedures you will follow to give the First Aid to a person with the problem of nose bleeding.

8. (a) State two Phyla of the Kingdom Fungi.

(b) "Fungi are important organisms to human being." By using four points, justify this statement. (i)

9. Two people have been severely injured in a car accident, leading to excessive bleeding hence requiring blood transfusion.

(a) Suggest four precautions to be considered before carrying out this process.

(b) Why is blood transfusion important for these individuals? Give a reason.

SECTION C (15 Marks) 

Answer question ten (10).

10. Caring and supporting people living with HIV/AIDS is essential for them to live a healthy lives. In six points, justify this statement.