Level: JHS, Basic 7 | Subject: Integrated Science | Strand: Cycles | Topic: Crop Production (Plant Nutrients, Fertilizers and School Farming)
Read the summary notes first, then try these questions. Go back to the summary notes for this topic.
Part A has 20 tick-box questions. Part B has 5 essay questions with a marking guide at the bottom.
Test Yourself: 20 Objective Questions
Tick one answer for each question, then press Review answer. If your answer is wrong, it will be marked first, then the correct answer will show in green.
1. Crop production means
2. Which of these is a food crop grown in Ghana?
3. Plant nutrients are
4. The three main plant nutrients are
5. Nitrogen helps the plant mainly to
6. A maize plant with yellow leaves and slow growth is most likely lacking
7. Phosphorus is important because it helps
8. Potassium helps plants to
9. Which of these is an organic manure?
10. Which of these is an inorganic fertilizer?
11. One advantage of organic manure is that it
12. One disadvantage of organic manure is that it
13. One disadvantage of inorganic fertilizer is that it
14. Which statement is TRUE about inorganic fertilizer?
15. Compost is made from
16. A compost heap should be kept
17. The method of spreading fertilizer evenly over the whole field is called
18. Fertilizer should not touch the stem of the plant because it
19. Which of these is the correct order for school farming?
20. Why should a school farm keep records?
Essay Questions
- (a) What are plant nutrients? (b) Name the three main plant nutrients and state one use of each to the plant. (7 marks)
- Distinguish between organic manure and inorganic fertilizer. Give two examples of each. (6 marks)
- State three advantages and two disadvantages of using organic manure. (5 marks)
- Describe how to prepare compost in the school garden. (7 marks)
- Your class has been given a small piece of land for a school farm. Describe the steps you will follow from choosing the site to harvesting. (5 marks)
Essay Questions: Marking Guide for Teachers and Parents
- (a) Substances plants take from the soil to grow and stay healthy (2). (b) Nitrogen: leaf and stem growth; phosphorus: roots, flowers and seeds; potassium: disease resistance and fruits (1 mark for naming each, 1 for each use, total 5).
- Organic manure is made from rotted plant and animal materials; inorganic fertilizer is made in factories from chemicals (2 marks each, total 4). Examples: compost, cow dung, poultry droppings; NPK, urea, sulphate of ammonia (any two of each, 1 mark each, total 2 for correct examples).
- Advantages (any three): cheap, improves soil structure, holds water, releases nutrients slowly, safe for the environment (1 mark each). Disadvantages (any two): bulky, slow, low nutrient content (1 mark each).
- Choose a shady spot and dig a pit or make a heap (1). Layer dry waste, green waste, droppings and a little soil (2). Keep it moist (1). Turn it every one to two weeks (1). Wait two to three months until dark and crumbly (2).
- Any five in order: choose a flat site near water (1), clear and prepare the land (1), select good seeds (1), plant at the right spacing at the start of rains (1), weed, water and apply manure (1), control pests (1), harvest on time (1), keep records (1). Maximum 5 marks.
Education Always (education.inspiringalways.com). Original practice questions, not official WAEC or BECE questions.