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