Biology Dodoma Form Four Mock Examination 2025

PRESIDENT’S OFFICE

REGIONAL ADMINISTRATION AND LOCAL GOVERNMENTS

DODOMA REGION

FORM FOUR MOCK EXAMINATION

CODE: 033/1 BIOLOGY-01

TIME: 3:00 HOURS

DATE: JUNE 2025

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INSTRUCTIONS:

1. This paper consists of Sections A, B and C with a total of ELEVEN (11) questions.
2. Answer all questions in Sections A and B, and any TWO (2) questions from Section C.
3. Use blue or black ink. Draw diagrams with a pencil.
4. Cellular phones and unauthorized materials are NOT allowed.
5. Write your Examination Number on every page of your answer booklet(s).

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SECTION A (15 Marks)

Answer all questions in this section.

1. Multiple Choice Questions

Choose the correct answer and write its letter in your answer booklet.

1. Normal urine contains the following dissolved substances except:
   A. Ammonia   B. Uric acid   C. Urea   D. Glucose   E. Inorganic ions
2. A condition/factor that can be changed in an experiment:
   A. Hypothesis   B. Variables   C. Problems   D. Conclusion   E. Experiment
3. One of the most important functions of excretion in the human body:
   A. To maintain homeostatic condition
4. Anti-diuretic hormone is secreted by:
   A. Pituitary gland
5. During a race, the increased breathing rate supplies extra:
   B. Oxygen required by muscles
6. The theory of use and disuse was put forward by:
   C. Lamack
7. Hormones produced by ovaries are:
   D. Oestrogen and progesterone
8. The function of cones in the eye is to:
   B. Sense colour
9. Species with cellulose in their cells belong to:
   D. Kingdom Plantae
10. Red + White flower = Pink. This is:
    D. Incomplete dominance

2. Matching Items

Match List A with List B

List A

• i. Chamber with thick walls
• ii. Valve preventing backflow to right auricle
• iii. Valve preventing backflow from pulmonary artery
• iv. Tissue separating heart chambers
• v. Chamber with thin walls
• vi. Sets contraction rate of heart

List B

• A. Auricle
• B. Sinoatrial node
• C. Aorta
• D. Bicuspid
• E. Semilunar
• F. Septum
• G. Tricuspid
• H. Ventricle
• I. Vena cava
• J. Cardiac muscles

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SECTION B (54 Marks)

3. Hamisa is 70kg and 150cm tall:
   a) What is her BMI?
   b) What dangers is she facing?
   c) What advice would you give her and why?
4. As a student, how would you behave well when invited to dinner at a neighbor’s house? (Give six points)
5. a) How is the human ear adapted to its function? (Give 4 points)
   b) Explain the function of:
   i. Pinna   ii. Eardrum   iii. Ossicles
6. Maua picked a plant with fibrous roots, non-woody stem, and 6 sepals/petals.
   a) Name its division and class.
   b) Mention 4 characteristics of that division.
7. a) Name where these joints are found:
   i. Fixed joints   ii. Pivot joint   iii. Ball and socket joint
   b) Name the fluid in ball/socket joint.
   c) What happens if this fluid is reduced?
8. Two normal-skinned parents got an albino child. The man suspects cheating.
   Use a genetic diagram to prove that it is possible genetically.

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SECTION C (30 Marks)

Answer any TWO (2) questions.

9. Discuss six plant features that affect the rate of transpiration.
10. Briefly describe theories of origin of life.
11. Give six measures to prevent the spread of Tuberculosis (TB).