A) Arid desert B) Temperate C) Cold and dry D) Warm and humid
A) Rocky soil B) Well-drained, sandy loam C) Compacted silt D) Heavy clay
A) Late autumn B) Summer C) Early spring D) Mid-winter
A) Flowers B) Roots C) Tubers or vine cuttings D) Leaves
A) Approximately 4-6 inches B) 12 inches C) 1 inch D) Right on the surface
A) To make harvesting easier B) To allow the vines to climb and maximize sunlight exposure C) To prevent weed growth D) To keep the tubers warm
A) Earthworms B) Praying mantises C) Yam beetles D) Ladybugs
A) Powdery mildew B) Black spot C) Anthracnose D) Rust
A) Daily, regardless of soil moisture B) Only when the soil is completely dry C) Never, yams prefer dry conditions D) Regularly, keeping the soil moist but not waterlogged
A) A fertilizer high in nitrogen only B) A fertilizer high in phosphorus only C) A balanced fertilizer high in potassium D) No fertilizer is needed
A) 1-2 months B) 6-12 months C) 2-3 years D) 1 week
A) Pull the vines forcefully from the ground B) Leave the yams in the ground indefinitely C) Use a tractor to plow the field D) Carefully dig around the tubers to avoid damage
A) In a cool, dry, and well-ventilated place B) In direct sunlight C) In the refrigerator D) In a damp cellar
A) To prevent vine growth B) To shade the roots C) To reduce airflow D) To encourage tuber development
A) Soaking the yams in water B) Allowing the skin to harden, improving storage life C) Freezing the yams D) Boiling the yams
A) Phosphorus B) Calcium C) Nitrogen D) Potassium
A) 8.5-9.0 B) 4.0-4.5 C) 7.5-8.0 D) 6.0-6.5
A) To prevent soil depletion and pest buildup B) To increase the size of the yam tubers C) It's not important D) To change the color of the yams
A) Using setts (pieces of tubers) B) Grafting C) Direct seeding D) Air layering
A) Increases humidity around the plants B) Reduces competition for resources like nutrients and sunlight C) Attracts pollinators D) Improves soil compaction
A) Accelerates soil erosion B) Increases soil acidity C) Helps retain soil moisture and suppress weeds D) Attracts pests
A) Growing seedlings B) Storing harvested yams C) Drying yam leaves for tea D) Processing yams into flour
A) Yams are typically starchier and less sweet B) Yams are typically sweeter and have orange flesh C) Yams are smaller in size D) Yams have smoother skin
A) Nigeria B) Brazil C) China D) India
A) Root development B) Promoting leafy growth C) Nitrogen fixation D) Enzymatic activity and regulating water balance
A) Lower cost compared to setts B) Faster growth compared to using setts C) Larger tuber size D) Increased resistance to pests
A) A period of inactivity of the tuber B) The flowering stage of the plant C) A disease affecting the leaves D) The harvesting season
A) Protecting the tubers from sunlight B) Irrigating the plants C) Controlling soil erosion D) Providing support for the vines to climb
A) Food B) Traditional medicine C) Making cooking oil D) Animal feed
A) To improve germination rate B) To prevent fungal infections C) To increase seed size D) Yams are not grown from seed |