Revision Agricultural Science Primary 6 First Term Lesson Notes Week 11

Agricultural Science Primary 6 First Term Week 11 Revision

Subject: Agricultural Science
Class: Primary 6
Term: First Term
Week: 11
Age: 11 years

Part A: Review and Revision

Instructions: Answer the following questions to review what has been taught this term.

1. What is the purpose of preserving farm produce?
   Answer: To extend the shelf life, maintain nutritional value, and prevent spoilage.
2. Name three methods of preserving fruits.
   Answer: Drying, freezing, and canning.
3. How does refrigeration help preserve vegetables?
   Answer: It keeps vegetables fresh by maintaining a cool temperature.
4. What is the main benefit of drying grains like maize?
   Answer: It prevents spoilage by removing moisture.
5. How does smoking preserve meat or fish?
   Answer: It adds chemicals and heat to prevent bacterial growth.
6. Why is blanching important before freezing vegetables?
   Answer: It helps to preserve color and flavor and stop the enzymes that cause spoilage.
7. Describe the method of canning.
   Answer: Sealing food in jars and heating them to kill bacteria.
8. What is the main advantage of freezing vegetables?
   Answer: It preserves them for a long time by slowing down spoilage.
9. What are roots and tuber crops?
   Answer: Plants like yam and cassava that store nutrients in their roots or tubers.
10. Give an example of a method used to preserve oil crops.
    Answer: Oil extraction and storage in airtight containers.
11. How does salting help in preserving food?
    Answer: It draws out moisture and inhibits bacterial growth.
12. What is the purpose of using a dehydrator?
    Answer: To remove moisture from food to extend its shelf life.
13. Name a common preservation method for tropical fruits.
    Answer: Drying or canning.
14. Why is it important to preserve vegetables?
    Answer: To ensure they remain edible and nutritious over time.
15. What is the role of sun drying in food preservation?
    Answer: It removes moisture using the sun’s heat.
16. How does freezing affect the texture of fruits?
    Answer: It can make them mushy when thawed.
17. What is one advantage of preserving oil crops?
    Answer: It prevents spoilage and allows for long-term storage.
18. How can you preserve fresh herbs?
    Answer: By drying or freezing them.
19. Why is it important to store preserved food in airtight containers?
    Answer: To keep out moisture and air, which can cause spoilage.
20. Describe the method of preserving tomatoes.
    Answer: Can them or dry them to keep them for longer.

Part B: Objective Questions

Instructions: Fill in the blanks with the correct answer from the options provided.

1. The method that involves removing moisture from vegetables is called ______.
   a) Drying
   b) Freezing
   c) Canning
   d) Blanching
2. ______ helps preserve vegetables by keeping them at a low temperature.
   a) Freezing
   b) Drying
   c) Canning
   d) Salting
3. Which method seals food in jars and heats it?
   a) Canning
   b) Freezing
   c) Drying
   d) Blanching
4. ______ involves briefly boiling vegetables before freezing.
   a) Blanching
   b) Freezing
   c) Canning
   d) Salting
5. The method that uses heat and smoke to preserve food is ______.
   a) Smoking
   b) Freezing
   c) Drying
   d) Canning
6. ______ preserves food by keeping it in a cool place.
   a) Refrigeration
   b) Freezing
   c) Smoking
   d) Drying
7. What method is used to preserve fruits like mangoes and bananas?
   a) Drying
   b) Canning
   c) Smoking
   d) Freezing
8. To prevent spoilage, grains are often ______.
   a) Dried
   b) Frozen
   c) Canned
   d) Boiled
9. ______ is used to preserve oil crops by storing them in sealed containers.
   a) Extraction
   b) Canning
   c) Freezing
   d) Salting
10. Which method involves removing moisture from food using the sun’s heat?
    a) Sun drying
    b) Freezing
    c) Canning
    d) Smoking
11. ______ helps preserve vegetables by briefly heating them before freezing.
    a) Blanching
    b) Drying
    c) Smoking
    d) Salting
12. The preservation method best suited for fresh herbs is ______.
    a) Drying
    b) Canning
    c) Freezing
    d) Smoking
13. Preserving food in an airtight container helps prevent ______.
    a) Spoilage
    b) Freshness
    c) Color
    d) Flavor
14. To preserve tomatoes, you can ______ them.
    a) Can
    b) Freeze
    c) Smoke
    d) Dry
15. The method that involves keeping food at a low temperature is ______.
    a) Freezing
    b) Smoking
    c) Drying
    d) Canning
16. ______ is a method used to keep vegetables fresh for a long time.
    a) Refrigeration
    b) Smoking
    c) Drying
    d) Freezing
17. To preserve maize, it is typically ______.
    a) Dried
    b) Frozen
    c) Canned
    d) Blanched
18. The process of ______ involves heating and sealing food to prevent spoilage.
    a) Canning
    b) Freezing
    c) Drying
    d) Salting
19. ______ is used to preserve oil crops like groundnuts and soybeans.
    a) Extraction
    b) Canning
    c) Freezing
    d) Drying
20. The method of preserving okra by removing moisture is called ______.
    a) Drying
    b) Freezing
    c) Canning
    d) Smoking

Part C: Theory Questions

Instructions: Answer the following questions in short form.

1. What are the common methods for preserving vegetables?
2. How does drying help in preserving grains like maize?
3. Describe the process of canning and its benefits.
4. Why is blanching used before freezing vegetables?
5. Explain the preservation method used for tropical fruits.
6. What is the purpose of refrigeration in preserving vegetables?
7. How can smoking be used to preserve meat or fish?
8. What is the role of salting in preserving food?
9. Describe the method of sun drying for preserving fruits.
10. How does freezing affect the texture of vegetables?
11. Why is it important to use airtight containers for preserved food?
12. What are the benefits of preserving herbs by drying?
13. How does preserving oil crops prevent spoilage?
14. Explain the process and benefits of preserving tomatoes.
15. What is the impact of preservation on the nutritional value of vegetables?
16. How can roots and tuber crops be effectively preserved?
17. What preservation method is best for leafy vegetables like spinach?
18. How does canning help in storing fruits and vegetables?
19. Why is it important to remove moisture from food during preservation?
20. What methods can be used to preserve fresh herbs?

Part D: True or False Questions

Instructions: Indicate whether each statement is True or False.

1. Freezing helps to maintain the freshness of vegetables. (True/False)
2. Blanching involves removing moisture from vegetables. (True/False)
3. Canning involves sealing food in jars and heating it. (True/False)
4. Drying adds moisture to food to preserve it. (True/False)
5. Refrigeration helps to extend the shelf life of vegetables. (True/False)
6. Smoking is a method that uses heat and chemicals to preserve food. (True/False)
7. Canning is not effective for preserving meat. (True/False)
8. Blanching is done after freezing vegetables. (True/False)
9. Sun drying removes moisture from food using the sun’s heat. (True/False)
10. Preserved food should be stored in airtight containers. (True/False)
11. Preservation methods can change the texture of food. (True/False)
12. Drying is a method used to increase moisture content in food. (True/False)
13. Blanching helps to preserve color and flavor in vegetables. (True/False)
14. Freezing does not affect the nutritional value of food. (True/False)
15. Preservation methods are only used for fruits and not for vegetables. (True/False)
16. Smoking involves adding chemicals to food to prevent spoilage. (True/False)
17. Refrigeration is used to keep food at high temperatures. (True/False)
18. Canning is the same as drying in terms of preservation. (True/False)
19. Preserving food helps to reduce waste. (True/False)
20. The goal of preservation is to increase food spoilage. (True/False)

Part E: Fill in the Gaps

Instructions: Fill in the blanks with the correct words.

1. ______ is the method used to preserve food by removing moisture.
2. Freezing helps to keep food fresh by maintaining a ______ temperature.
3. The process of ______ involves sealing food in jars and heating them.
4. Blanching is done to preserve ______ and flavor before freezing.
5. ______ is a method used to preserve food using the sun’s heat.
6. To keep food fresh, it should be stored in ______ containers.
7. Smoking preserves food by adding ______ and heat.
8. ______ is used to draw out moisture from food to prevent spoilage.
9. The process of ______ involves briefly boiling vegetables before freezing.
10. Drying is commonly used to preserve ______ crops like maize.
11. Preservation methods help to extend the ______ of food.
12. ______ is a method that involves removing moisture from food using air.
13. Freezing can make fruits ______ when thawed.
14. Canning is effective for preserving ______ like tomatoes.
15. The method that involves adding chemicals to prevent bacterial growth is ______.
16. Refrigeration helps to keep food ______ and prevent spoilage.
17. ______ helps to keep vegetables fresh for a long time.
18. To preserve herbs, you can ______ or freeze them.
19. The purpose of salting is to prevent ______ growth.
20. Oil crops can be preserved by ______ and storing them in sealed containers.

This revision sheet covers the main topics and methods taught during the first term, ensuring that students can review and test their understanding effectively.