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

033 BIOLOGY

Time 2:30 Hours Year: 2022

Instructions

l . This paper consists of sections A, B and C with a total of ten (10) questions.

2. Answer all questions.

3. Section A and C carry fifteen (15) marks each and Section B carries seventy (70) marks.

4. All writing must be in blue or black ink except drawing which must be in pencil.

5. Cellular phones and any unauthorized 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.

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

(i) Farmers in a certain village found their maize crops have yellow leaves with dead spots at the margin and tips. Which mineral do the maize crops lack?

1. Calcium
2. Sulphur
3. Phosphorus
4. Potassium

(ii) The Saranga Football Team's goalkeeper fell down during the match due to muscle cramps. Which component in the First Aid kit will you use to give him first aid?

1. Vaseline
2. Spirit
3. Liniment
4. Scissor

(iii) What is the main product of anaerobic respiration in animals?

1. Lactic acid
2. Alcohol
3. Water
4. Carbon dioxide

(iv) Which organisms feed on primary consumers?

1. Lion, Hyena and Leopard
2. Leopard, Buffalo and Giraffe
3. Hyena, Zebra and Wildebeest
4. Zebra, Wildebeest and Buffalo

(v) If there is cholera outbreak in the nearby school, which way would you use to prevent the disease?

1. Killing mosquitoes
2. Covering nose when sneezing
3. Boiling drinking water
4. Eliminating rat and fleas

(vi) Why is screening of donors' and recipients' blood samples before transfusion important?

1. Ensuring compatibility
2. Preventing bleeding
3. Ensuring incompatibility
4. Enhancing coagulation

(vii) Which apparatuses are used for heating substances in the Biology laboratory?

1. Test tube holder and Thermometer
2. Spirit lamp and Bunsen burner
3. Bunsen burner and Thermometer
4. Spirit lamp and Test tube rack

(viii) Why is it necessary to chew food properly before swallowing?

1. Dissolves chemicals taken into the mouth
2. Kills harmful organisms present in the food
3. Helps digestive enzymes to penetrate the food
4. Breaks down small pieces of food into large

(ix) Which statement is true about the virus?

1. It is active outside the host cell but dormant inside it
2. It is active inside the host cell but dormant outside it
3. It carries life processes when outside the host cell
4. It has both DNA and RNA as genetic materials

(x) How is plague transmitted from one person to another?

1. Through sexual intercourse with an infected person
2. By contact with water containing parasitic larvae
3. Through tsetse fly bites from infected to a healthy person
4. Through rat fleas bites from infected to a healthy person's