Soil and Agriculture Quiz

What is the main reason topsoil is more vulnerable to erosion?

• It contains no nutrients

• It is heavier than subsoil

• It lies at the surface and is loose

• It repels water

Which of the following best defines runoff?

• Rainwater stored in tanks

• Water that sinks into the soil

• Water flowing over soil after rain

• Water used in irrigation

Which of the following is not a method of improving soil fertility?

• Adding plastic waste

• Adding compost manure

• Mixing organic matter

• Using decomposed kitchen waste

What is the main tool used to cut plant waste into smaller pieces for compost?

• Spade

• Fork jembe

• Rake

• Panga

What would most likely happen if compost includes chemical containers?

• It will decompose faster

• It will poison the soil

• It will grow healthier crops

• It will attract more earthworms

Why should hands be washed after handling compost?

• To keep the compost clean

• To avoid bad smell

• To maintain personal hygiene

• To soften the hands

Which of these materials is least suitable for mulching?

• Dry grass

• Sawdust

• Kitchen peels

• Plastic bags

What is the role of shading crops?

• To speed up photosynthesis

• To prevent birds from eating crops

• To reduce evaporation

• To increase sunlight exposure

Which plant is a cover crop?

• Onion

• Pumpkin

• Maize

• Cabbage

What do cover crops help prevent?

• Soil hardening

• Splash erosion

• Pest attacks

• Fungal infections