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