PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT-RALG

FORM FOUR PRACTICAL EXAMINATION

033/2 BIOLOGY 2A

(Actual practical)

TIME: 2:30HRS Friday 22^th March, 2024 AM

INSTRUCTIONS

1. This paper consists of two (2) questions, answer all the questions.
2. Each question carries 25marks.
3. Write your examination number on every page of your answer booklet(s)
4. All writings should be in blue or black ink, diagrams must be drawn in pencil.
5. Cellular phones and any unauthorized materials are not allowed in the examination room.
6. You have been provided with specimen L in a petridish.

1. Carry out an experiment using the procedures below and answer the questions that follows.

Procedures:

1. Using a scalpel cut thin slice of specimen L
2. Put such slice of specimen L in boiled water for five minutes.
3. Remove a slice of specimen L in boiled water and put it into a petridish.
4. Using a dropper apply two (2) drops of iodine solution on specimen L into a Petridish.

Questions:

1. What is the aim of experiment?
2. What changes did you observe in specimen L when you applied iodine solution to it?
3. What does it mean for observation in (ii) above?
4. What are two natural sources specimen L could be obtained?
5. Write the role of specimen L to human body.
6. In which part of the body the end product of identified food is stored.
7. Excess glucose is fatal for the health of the body what is done in the body to ensure the safeness of internal body condition?
8. In which parts of the alimentary canal food sample L is digested.

2. You have been provided with specimen P, Q, R and S. Study them carefully, and then answer the following questions.
a. (i) What are the common name for specimen Q and S?
(ii) Classify Specimen R and Q to Class Level
b. (i) How specimen P is important in a balance of ecosystem?
(ii) Draw a well labeled diagram of specimen P?
c. Give four (4) points to explain why specimen S is important in crop cultivation.

PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM FOUR PRACTICAL EXAMINATION

CODE: 033/2A BIOLOGY 2A (ACTUAL PRACTICAL)

TIME 2:30HRS OCTOBER 03, 2023

Instructions

1. This paper consists of two questions.
2. Answer all questions.
3. Each question carries25 marks.
4. Mobile phones and any unauthorized material sare not allowed in examination room.
5. Write your examination number on every page of your answer sheet.
6. Most of people in our societies they are not aware with type of food nutrients present in specimen K and L. By using knowledge that you show them the type of nutrients present by performing a food test experiment by using reagents provided.

Procedures

1. Clean your specimen K and L with normal tap running water.
2. Peel off your specimen K and L using knife.
3. By using a knife cut the specimens into small pieces (separately)
4. Grind them by using mortar and pestle (separately)
5. Sieve grinded specimens to obtain clear solutions and mix solutions to get solution M.
6. Carry out a step by step food test experiment and record your results in a table as shown below;

2. State two examples of natural food substances for each food nutrients obtained in your food test.
3. State the role of dilute hydrochloric acid (HCl) solution in the food test experiment.
4. Identify the enzymes responsible for digestion and give the end product of digestion of identified food substances.
5. State the biological importance of the identified food in the human body.

2. You have been provided with the specimens A, B, C and D. observe them carefully then answer the questions that follows:

1. Write the common name of the specimen A, B, C and D
2. Indicate the location of specimen A, B, C and D in the human body
3. Name the joint(s) formed by specimen A, B and C
4. What are the roles of specimen D in the human body?
5. Draw a well labelled diagram of specimen A and label only three parts
6. Outline the adaptations of specimen B

PRESIDENT'S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

KILIMANJARO REGION MOCK FORM FOUR EXAMINATION

BIOLOGY 2A
(ACTUAL PRACTICAL)

CODE: 033/2A

TIME: 2:30 HOURS. MAY 2023

INSTRUCTIONS

1. This paper consists of two questions (2). Answer all questions.
2. Each question carries twenty-five (25) marks.
3. All writings should be in blue or black pen, except for diagrams that must be drawn in pencil
4. Cellular phones and any unauthorized materials are not allowed in the examination room.
5. Write your examination number on every page of your answer sheet(s).

1. You are provided with specimen Q. carry out an experiment as indicated below:.

1. Dip specimen Q in hot water for about one minute.
2. Boil specimen Q in alcohol using a hot water for about one minute
3. Dip the boiled specimen Q in hot water
4. Spread specimen Q on a white tile and add 2-3 drops of iodine solution on the specimen.

QUESTIONS;

(a) (i) identify specimen Q

(ii) What observation did you make after applying iodine solution to specimen Q

(b) Why was specimen Q

1. Dipped in hot water at the beginning of the experiment.
2. Boiled in alcohol.
3. Dipped in hot water after boiling in alcohol
4. Why alcohol was boiled using a hot water bath?

(c)

1. What is the aim of the experiment?
2. Name the physiological process which was being investigated
3. What conclusion can you make from this experiment?

2. You have been provided with specimens L, M, N, O,and P

1. Identify each of the specimens by their common names.
2. Classify each specimen to the phylum level
3. List two observable differences between specimen L and M.
4. Explain why specimen P cannot grow taller.
5. Write down two distinctive characteristics of the phylum to which specimen O belongs.
6. (i) list the modes of reproduction in specimens M and N (ii) What are the two differences between these modes of reproduction?

THE UNITED REPUBLIC OF TANZANIA ,PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM FOUR PRACTICAL EXAMINATION

BIOLOGY 2C (ACTUAL PRACTICAL)

(For Both School and Private Candidates)

CODE 033/2C

Time: 2:30 Hours September 2022 

Instructions

1. This paper consists of two (2) questions. Answer BOTH questions.
2. Each question carries twenty five (25) marks.
3. Except for diagrams which must be drawn in pencil, all writings should be in blue or black ink.
4. Cellular phones and any unauthorized materials are not allowed in the examination room.
5. Write Your Examination Number on every page of your answer booklet(s).

1. You have been provided with specimen M and a piece of paper. Carry out an experiment as directed in procedures (i) – (iv) then answer the questions that follow:

Procedures:

(i) Grind the seed of the given specimen M using a motor and pestle to obtain a paste.

(ii) Use your hand to take the ground paste from procedure (i) above and gently rub it on the piece of paper provided.

(iii) Remove the paste from the paper and leave it to dry.

(iv) After the paper dries completely, observe the paper carefully to check if any change has occurred.

Questions:

(a) What was the aim of experiment?

(b) What is your comment (s) on the observation?

(c) Briefly describe the procedures and observation of another experiment which can be used as an alternative of above experiment.

(d) Outline four (4) roles of the food substance identified from specimen M in the above experiment.

(e) Why the food identified from procedures (i-iv) should be taken in a very low amount?

(f) Suggest other four (4) natural foods in which you can obtain the identified food.

2. You have been provided with specimen H, I, J and K. Study them carefully and then answer the questions that follow:

(a) (i) Write the common names of Specimens I, J and K.

(ii) Classify specimens H, I, J and K to phylum/division level.

(b) Despite specimens H and I being under the same phylum, they are normally placed under different classes. Give four reasons.

(c) What is the mode of heterotrophic nutrition exhibited by specimen K?

(d) Draw a large and neat diagram of specimen J and label the parts responsible for each of the following:

(i) Carrying out photosynthesis

(ii) Anchorage into the soil and absorption of nutrients and water (iii) Supporting the leaflets.

(e) Why specimen J should be preserved and not eliminated from the environment?

(Any four reasons).

THE UNITED REPUBLIC OF TANZANIA ,PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM FOUR PRACTICAL EXAMINATION

BIOLOGY 2C (ACTUAL PRACTICAL)

CODE 033/2C

TIME: 2:30HRS

24 HOURS ADVANCE INSTRUCTIONS

1. Important:
   1. Great care must be taken not to divulge these instructions to both candidates and unauthorized person, either directly or indirectly
   2. Make sure that, the candidates are provided with the specimens, chemicals and apparatus indicated in these advance instructions only and not otherwise
   3. Please, do not open the envelope containing the question papers, 24 hours before the time of commencement of the examination

1. PREPARATION OF SOLUTION

Provide the following requirements for the preparations of solution

1. Tomato fruit . . . . . . . . . . . . . . . . . . . . K (01 per candidate)

2. SPECIMEN(s)

P - Monocot leaf . . . . . . . . . . . . . . . . . . . . . 1 per 3 candidates

Q - Dicot leaf . . . . . . . . . . . . . . . . . . . . . .. 1 per 3 candidates

R – Earthworm . . . . . . . . . . . . . . . . . . . . . 1 per 3 candidates

3. TABLE REAGENTS

1. Iodine solution
2. Sodium hydroxide solution
3. Copper II sulphate solution (1%)
4. Sudan III solution
5. Benedict’s solution
6. Dilute HCL solution

4. APPARATI

1. Knife . . . . . . . . . . . . . . .. . . . . . . .. . (01 per candidate)
2. Sieve . . . . . . . . . . . . . . .. . . . . .. . . . (01 per candidate)
3. Beaker . . . . . . . . . . . . . ... ... . . .. . . ..(03 per candidate)
4. Test tubes . . . . . . . . . . . . . ... . . . .. . . (05 per candidate)
5. Test tube rack . . . . . . . . . . .. . . . . . . . .(01 per candidate)
6. Test tube holder . . . . . . . . . . . . . . ... . . (01 per candidate)
7. Source of heat . . . . . . . . . . . . . . . .. . . (01 per candidate)
8. Test tube brush . . . . . . . . . . . . . . . . . .. (01 per candidate)
9. Mortar and pestle . . . . . . . . . . ... . . . . . (01 per candidate)

5. OTHER REQUIREMENTS

1. Source of heat . . . . . . . . . . . . . .. . (1 per 3 candidates)
2. Distilled/rain water . . . . . . .. . . . . . . .. (15m³ per candidate)

THE PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM IV PRACTICAL EXAMINATION

033/2C BIOLOGY 2C

(ACTUAL PRACTICAL)

TIME: 2:30HRS

Instructions

1. This paper consists of two (2) questions, answer all the questions
2. Each questions carries 25 marks
3. Write your examination number on every page of your answer booklet(s)
4. All writings should be in blue or black ink, diagrams must be drawn in pencil
5. Cellular phones and any unauthorized materials are not allowed in the examination room.

1. You have been provided with specimen K, test tubes, a beaker, test tube rack, test tube holder and the table reagents.

Consider the following procedures

1. Cut the specimen K, in a transversal section
2. Squeeze the two halves to obtain a solution
3. Add 15cm³ of distilled/rainwater
4. Filter the mixture by using a sieve to obtain a clear solution, Call it solution K

Questions

1. Carry out food test procedures, then identify the food substances present in the solution K.

Tabulate your answers as follows

2. Name the food substances identified in part (1a) above
3. Give functions of the identified food substances to the human body
4. Name the food substances which are missing in the solution K, that need to be added in order to obtain a balanced diet.
5. Name the digestive enzymes and the part in alimentary canal where the identified food substances are digested.

2. You have been provided with the specimens P, Q and R. study these specimens carefully then answer the questions that follow.

1. Identify specimen P, Q and R by their common names
2. (i) Classify specimen P, Q and R to the class level

(ii) Give three differences between specimen P and Q.

3. (i) Draw well labeled large diagram of specimen Q

(ii) Identify two adaptations of specimen Q to its function.

(iii) Name three processes that take place in both specimens P and Q in the plants.

4. State four economic importance of specimen R to farmers

THE UNITED REPUBLIC OF TANZANIA PRESIDENT’S OFFICE

REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM FOUR PRACTICAL EXAMINATIONS

BIOLOGY 2B (ACTUAL PRACTICAL)

033/2B 

24 HOURS ADVANCE INSTRUCTIONS

1. IMPORTANT
2. GREAT CARE MUST BE TAKEN NOT TO DIVULGE THESE INSTRUCTIONS TO BOTH CANDIDATES AND UNAUTHORIZED PERSONS, EITHER DIRECTLY OR INDIRECTLY

2. MAKE SURE THAT, THE CANDIDATES ARE PROVIDED WITH THE SPECIMENS, CHEMICALS AND APPARATI INDICATED IN THESE ADVANCE INSTRUCTIONS ONLY AND NOT OTHERWISE

3. PLEASE, DO NOT OPEN THE ENVELOPE CONTAINING THE QUESTION PAPERS, 24 HOURS BEFORE THE TIME OF COMMENCEMENT OF THE EXAMINATION

1. PREPARATION OF SOLUTION

Onion bulb . . . . . . . . . . . . . . . . . . . . . . .. Q (01 per candidate)

2. SPECIMENS

1. R . . . . . . . . . . . . . . . . . . . Hibiscus flower (01 per candidate)
2. S . . . . . . . . . . . . . . . . . . . . . Irish potato (01 per candidate)
3. T . . . . . . . . . . . . . . . . . . . . ... Centipede (01 per candidate)
4. U . . . . . . . . . . . . . . .. . . . . . . . Millipede (01 per candidate)

3. TABLE REAGENT

1. Iodine solution
2. Sodium hydroxide solution
3. 1% Copper II sulphate solution (1%)
4. Sudan III solution
5. Benedict’s solution
6. Dilute HCL solution

4. APPARATI

1. Knife . . . . . . . . . . . . . .. . . . . . . .. .. (01 per candidate)
2. Sieve . . . . . . . . . . . . . .. . . . . .. . . .. (01 per candidate)
3. Beaker . . . . . . . . . . . . ... ... . . .. . . ...(03 per candidate)
4. Test tubes . . . . . . . . . . . . ... . . . .. . . .(05 per candidate)
5. Test tube rack . . . . . . . . . .. . . . . . . . ..(01 per candidate)
6. Test tube holder . . . . . . . . . . . . . ... . . .(01 per candidate)
7. Source of heat . . . . . . . . . . . . . . .. . . . (01 per candidate)
8. Test tube brush . . . . . . . . . . . . . . . . ... (01 per candidate)
9. Mortar and pestle . . . . . . . . . ... . . . . . . (01 per candidate)

5. OTHER REQUIREMENTS

1. Distilled/rain water . . . . . .. . . . . . . ... (15m³ per candidate)

PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM FOUR PRACTICAL EXAMINATIONS 

BIOLOGY 2B 

(ACTUAL PRACTICAL)

INSTRUCTIONS

1. This paper consists of two (2) questions, answer all the questions
2. Each question carries 25marks
3. Write your examination number on every page of your answer booklet(s)
4. All writings should be in blue or black ink, diagrams must be drawn in pencil
5. Cellular phones and any unauthorized materials are not allowed in the examination room

1. You have been provided with specimen

Prepare a solution from specimen Q

Label it, solution Q

Questions

1. Write the procedures used in preparation of solution Q
2. Carry out experiments to identify the food substance present in the solution Q

3. Name food substances identified in part (1b) above
4. Outline the PH and products of digestion of the food substances identified in part (1b) above
5. Name the nutritional disorders that can occur, due to shortage of food substances which are missing in solution Q
6. In which form does excess starch is stored in the mammalian body?

1. You have been provided with specimens R,S,T and U, study them and answer questions;

Questions

1. Identify specimens R,S,T and U by their common names
2. Classify specimens R,T and U to class level
3. Draw the structures of specimens T and U showing their body parts
4. Cut specimen R in a longitudinal section, draw the structure and label its parts
5. Explain the general characteristics of arthropods
6. Describe the differences between specimen T and U

THE PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM IV PRACTICAL EXAMINATION

033/2A BIOLOGY 2A

(ACTUAL PRACTICAL)

24 HRS INSTRUCTIONS

1. Important
   1. Great care must be taken not to divulge these instructions to both candidates and unauthorized persons, either directly or indirectly
   2. Make sure that, the candidates are provided with the specimens, chemicals and apparatii indicated in these advance instructions only and not otherwise
   3. Please, do not open the envelope containing the question papers, 24 hours before the time of commencement of the examination

The following Apparatus, Reagents and Specimen should be available for the Biology 2A Mock Examination Actual Practical.

Apparatus:

• Petridish
• Beaker (200cm³)
• Scalpel/ knife
• Dropper
• Source of heat, M
• Wire gauze,
• Tripod stand and
• Forceps.

Reagents:

• Iodine solution
• Water supply

Specimens:

• L– A piece of cassava …………………………. 1 per 3 candidates
• P– Frog ………………………………………… 1 per 3 candidates
• Q– Millet grain ………………………………… 1 per 3 candidates
• R– Spider ……………………………………… 1 per 3 candidates
• S–Earthworm …………………………………… 1 per 3 candidates

PRESIDENT’S OFFICE REGIONAL ADMINISTRATION AND LOCAL GOVERNMENT

FORM FOUR PRACTICAL EXAMINATION

BIOLOGY 2A (ACTUAL PRACTICAL)

033/2A

TIME: 2:30HRS

INSTRUCTIONS

1. This paper consists of two (2) questions, answer all the questions
2. Each question carries 25marks
3. Write your examination number on every page of your answer booklet(s)
4. All writings should be in blue or black ink, diagrams must be drawn in pencil
5. Cellular phones and any unauthorized materials are not allowed in the examination room
6. You have been provided with specimen L in a petridish.

1. Carry out an experiment using the procedures below and answer the questions that follows.

Procedures:

1. Using a scalpel cut thin slice of specimen L
2. Put such slice of specimen L in boiled water for five minutes.
3. Remove a slice of specimen L in boiled water and put it into a petridish.
4. Using a dropper apply two (2) drops of iodine solution on specimen L into a Petridish.

Questions:

1. What is the aim of experiment?
2. What changes did you observe in specimen L when you applied iodine solution to it?
3. What does it mean for observation in (ii) above?
4. What are two natural sources specimen L could be obtained?
5. Write the role of specimen L to human body.
6. In which part of the body the end product of identified food is stored.
7. Excess glucose is fatal for the health of the body what is done in the body to ensure the safeness of internal body condition?

2. You have been provided with specimen P, Q, R and S.

Study them carefully, and then answer the following questions.

1. (i) What are the common name for specimen Q and S?

(ii) Classify Specimen R and Q to Class Level

2. (i) How specimen P is important in a balance of ecosystem?

(ii) Draw a well labeled diagram of specimen P?

3. Give four (4) points to explain why specimen S is important in crop cultivation.