Growing Vegetables
17 Grade 5 Agriculture questions on Growing Vegetables, with worked marking schemes. 17 questions are available on this topic in full.
Question 1
4 marksGive two reasons why a farmer thins out vegetable seedlings that have germinated too close together.
(4 marks)
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1 markWhich of the following is the correct order of activities when growing kale from a nursery?
A. Transplanting, preparing the nursery, harvesting, sowing seeds
B. Preparing the nursery, sowing seeds, transplanting, harvesting
C. Harvesting, transplanting, sowing seeds, preparing the nursery
D. Sowing seeds, harvesting, preparing the nursery, transplanting
(1 mark)
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1 markA pupil notices that carrot seedlings in one part of the row are growing too close together and are thin. What should the pupil do?
A. Water them less so some die
B. Add more seeds to the crowded part
C. Pull out all the seedlings in the row
D. Thin out the extra seedlings to leave proper spacing
(1 mark)
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1 markA farmer adds well-rotted animal manure to the vegetable seedbed before planting. The main reason for this is to:
A. Make the soil harder
B. Add nutrients and improve the fertility of the soil
C. Make the seeds germinate more slowly
D. Chase away all the earthworms
(1 mark)
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1 markWhy do farmers water kale seedlings in the nursery in the evening and reduce the shade a few days before transplanting?
A. To stop the seedlings from growing roots
B. To kill the seedlings that are too tall
C. To make the seedlings weaker
D. To harden the seedlings so they survive in the open field
(1 mark)
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4 marksExplain why farmers add well-rotted manure to a vegetable garden rather than fresh, undecomposed manure. Give two points.
(4 marks)
Marking scheme
Any two, 2 marks each: well-rotted manure releases its nutrients quickly for the plants while fresh manure takes long to rot; fresh manure can produce heat and burn/scorch the young roots and seedlings; well-rotted manure is free of weed seeds and pests that fresh manure may carry; rotted manure improves the soil structure and holds water better.
Question 7
1 markWhich of the following vegetables is a traditional (indigenous) leafy vegetable commonly grown and eaten in Kenya?
A. Irish potato
B. Wheat
C. Sugarcane
D. Managu (African nightshade)
(1 mark)
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1 markAphids are small insects that suck sap from vegetable leaves, making them curl and turn yellow. Aphids are therefore an example of a:
A. Farm tool
B. Soil nutrient
C. Cover crop
D. Crop pest
(1 mark)
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6 marksName three tools a pupil would use when preparing a small vegetable garden, and state what each one is used for.
(6 marks)
Marking scheme
Any three tools with correct use, 2 marks each (1 tool plus 1 use): jembe/hoe – digging and cultivating the soil; rake – levelling the soil and gathering rubbish; panga/slasher – clearing bushes and grass; watering can – watering the plants/seedlings; garden fork – breaking and turning the soil; wheelbarrow – carrying manure or soil.
Question 10
4 marksTransplanting is an important activity when growing kale.
(a) State what transplanting means.
(b) Give two things a farmer should do to avoid damaging the seedlings during transplanting.
(4 marks)
Marking scheme
(a) 2 marks: transplanting is moving/removing seedlings from the nursery bed and planting them in the main field/permanent garden. (b) 2 marks, 1 each: water the nursery before uplifting so the soil is soft; lift the seedlings with a ball of soil around the roots; handle them gently by the leaves not the stem; transplant in the cool evening/morning; do it quickly so roots do not dry.
Question 11
1 markBefore transplanting kale (sukuma wiki) seedlings, farmers first raise them in a special small, well-prepared plot. This plot is called a:
A. Nursery bed
B. Grazing paddock
C. Compost pit
D. Terrace
(1 mark)
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1 markRemoving unwanted plants (weeds) from a vegetable garden is important MAINLY because the weeds:
A. Compete with the vegetables for water, nutrients and sunlight
B. Keep the soil too wet for the vegetables
C. Give the vegetables extra food
D. Make the garden look untidy only
(1 mark)
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1 markSpinach seeds are very small. Which method of planting is MOST suitable for such small seeds in a seedbed?
A. Planting the seeds one metre apart
B. Throwing the seeds on hard, uncovered ground
C. Drilling the seeds shallowly and covering lightly with soil
D. Planting one seed in a very deep hole
(1 mark)
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3 marksDescribe how a pupil should prepare a seedbed for planting spinach. Give three steps.
(3 marks)
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1 markWhy should a vegetable seedbed be watered regularly, especially during the dry season?
A. To make the soil wash away
B. To make weeds grow faster than the vegetables
C. To provide the plants with water they need to grow
D. To stop the seeds from germinating
(1 mark)
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4 marksState four activities a farmer should carry out to take care of tomato plants after transplanting them into the garden.
(4 marks)
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4 marksA pupil finds many holes in the leaves of her cabbage plants and sees small caterpillars on them.
(a) What is causing the damage?
(b) Suggest two ways the pupil can control the problem without harming herself.
(4 marks)
Marking scheme
(a) 1 mark: caterpillars/insect pests are eating the leaves. (b) Any two, up to 3 marks: hand-pick the caterpillars and destroy them; spray with a safe/approved pesticide following the instructions and wearing protective gear; use plant-based sprays such as pepper or wood-ash solution; remove and destroy badly affected leaves; keep the garden clean and practise crop rotation.
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