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