A) Yams are monocots, sweet potatoes are dicots. B) Yams are always sweeter than sweet potatoes. 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) Tuber shape C) Flower color D) Stem morphology
A) Africa B) Asia C) South America D) North America
A) To defend against predators B) To attract pollinators C) To absorb water from the air D) To produce leaves and aerial tubers
A) Parallel B) Linear C) Alternate or opposite D) Whorled
A) The top portion of the tuber where vines grow. B) The root hairs on the tuber. C) The flowering part of the yam plant. D) The protective skin of the tuber.
A) Dioscorea rotundata (White yam) B) Dioscorea alata (Water yam) C) Dioscorea esculenta (Lesser yam) D) Dioscorea villosa (Wild yam)
A) White yam B) Chinese yam C) Water yam D) Air potato
A) By planting tuber pieces B) By grafting C) By leaf cuttings D) By seeds
A) Susceptibility to disease B) Flowering season C) A period of inactivity in the tuber D) Rapid vine growth
A) Variable size and shape B) Starchy texture C) Uniform color across all species D) Potential for toxicity in some species
A) They indicate the yam is ready to harvest. B) They are a sign of disease. C) They serve as a form of vegetative propagation. D) They are the primary source of food storage.
A) Dioscorea trifida B) Dioscorea cayenensis C) Dioscorea polystachya D) Dioscorea bulbifera
A) Tropical and subtropical B) Desert C) Arctic D) Temperate
A) For medicinal purposes only B) For ornamental purposes C) As animal feed D) As a staple food crop
A) Purple skin and round shape B) White flesh and cylindrical shape C) Extremely bitter taste D) Hairy vines and small tubers
A) A growth hormone in yams. B) A type of starch found in yams. C) A toxic alkaloid found in some yam species. D) A natural pesticide produced by yams.
A) Waterlogged soil B) Well-drained, fertile loam C) Sandy, infertile soil D) Heavy clay soil
A) Grasshoppers B) Caterpillars C) Yam beetles D) Aphids
A) Appearance of aerial tubers B) Drying of the vines C) Flowering of the plant D) Sudden increase in tuber size
A) A yam harvesting technique B) The genus of true yams C) A disease that affects yams D) A type of fertilizer used for yams
A) Prolonged boiling B) Fermentation C) Sun drying D) Refrigeration
A) Extremely hairy vines. B) Highly bitter taste. C) Very large, single tubers. D) Smaller tubers often produced in clusters.
A) Aerial tubers (bulbils) B) Root cuttings C) Seeds D) Underground tubers
A) The growing season length. B) The genetic makeup of the plant. C) The taste of the tuber. D) The physical form and structure of the plant.
A) Potato blight B) Yam mosaic virus C) Wheat rust D) Citrus canker
A) Dioscorea alata (Water yam) B) Dioscorea trifida (Cush-cush yam) C) Dioscorea bulbifera (Air potato) D) Dioscorea rotundata (White yam)
A) Fermenting B) Canning C) Curing D) Freezing |