A) Yams are always sweeter than sweet potatoes. B) Yams are monocots, sweet potatoes are dicots. C) Yams are orange, sweet potatoes are white. D) Yams are grown in America, sweet potatoes are not.
A) Convolvulaceae B) Solanaceae C) Dioscoreaceae D) Fabaceae
A) Tuber shape B) Flower color C) Stem morphology D) Leaf venation
A) North America B) South America C) Africa D) Asia
A) To attract pollinators B) To absorb water from the air C) To defend against predators D) To produce leaves and aerial tubers
A) Whorled B) Alternate or opposite C) Linear D) Parallel
A) The top portion of the tuber where vines grow. B) The flowering part of the yam plant. C) The protective skin of the tuber. D) The root hairs on the tuber.
A) Dioscorea alata (Water yam) B) Dioscorea rotundata (White yam) C) Dioscorea villosa (Wild yam) D) Dioscorea esculenta (Lesser yam)
A) Chinese yam B) White yam C) Air potato D) Water yam
A) By grafting B) By leaf cuttings C) By seeds D) By planting tuber pieces
A) Flowering season B) Rapid vine growth C) Susceptibility to disease D) A period of inactivity in the tuber
A) Starchy texture B) Potential for toxicity in some species C) Variable size and shape D) Uniform color across all species
A) They indicate the yam is ready to harvest. B) They are the primary source of food storage. C) They serve as a form of vegetative propagation. D) They are a sign of disease.
A) Dioscorea trifida B) Dioscorea bulbifera C) Dioscorea polystachya D) Dioscorea cayenensis
A) Desert B) Temperate C) Arctic D) Tropical and subtropical
A) For medicinal purposes only B) As animal feed C) As a staple food crop D) For ornamental purposes
A) White flesh and cylindrical shape B) Hairy vines and small tubers C) Extremely bitter taste D) Purple skin and round shape
A) A growth hormone in yams. B) A type of starch found in yams. C) A natural pesticide produced by yams. D) A toxic alkaloid found in some yam species.
A) Well-drained, fertile loam B) Sandy, infertile soil C) Waterlogged soil D) Heavy clay soil
A) Caterpillars B) Aphids C) Yam beetles D) Grasshoppers
A) Appearance of aerial tubers B) Drying of the vines C) Sudden increase in tuber size D) Flowering of the plant
A) The genus of true yams B) A disease that affects yams C) A type of fertilizer used for yams D) A yam harvesting technique
A) Sun drying B) Refrigeration C) Prolonged boiling D) Fermentation
A) Very large, single tubers. B) Extremely hairy vines. C) Smaller tubers often produced in clusters. D) Highly bitter taste.
A) Underground tubers B) Seeds C) Root cuttings D) Aerial tubers (bulbils)
A) The genetic makeup of the plant. B) The growing season length. C) The physical form and structure of the plant. D) The taste of the tuber.
A) Citrus canker B) Potato blight C) Wheat rust D) Yam mosaic virus
A) Dioscorea rotundata (White yam) B) Dioscorea alata (Water yam) C) Dioscorea trifida (Cush-cush yam) D) Dioscorea bulbifera (Air potato)
A) Fermenting B) Canning C) Freezing D) Curing |