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Populus sect. Aegiros: Quiz

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Question 1: Populus section Aegiros is a section of three species in the genus ________, the poplars.
WillowPopulusPopulus tremulaBalsam poplar

Question 2: In the typical subspecies deltoides (Vermont south to northern ________ and west to about Michigan), the leaves are broad triangular, 7–15 cm across at the base.
FloridaMassachusettsNew JerseyNorth Carolina

Question 3: Male and female ________ are in separate catkins, appearing before the leaves in spring.
SeedFlowering plantFruitFlower

Question 4: Cottonwoods are widely grown for ________ production along wet river banks, where their exceptional growth rate provides a large crop of wood within just 10–30 years.
Pulp (paper)LumberWood preservationFraming (construction)

Question 5: Further west (________ south to eastern Texas), the subspecies monilifera (Plains Cottonwood; syn.
North DakotaMinnesotaMinneapolis – Saint PaulSaint Paul, Minnesota

Question 6: It occurs throughout the eastern United States and just into southern ________.
BelizeUnited KingdomBarbadosCanada

Question 7: In western Texas, New Mexico and ________ the subspecies wislizeni (Rio Grande Cottonwood; syn.
FloridaColoradoMissouriUtah

Question 8: Cottonwood is one of the poorest woods to use as ________.
Ethanol fuelWood pelletWood fuelBiofuel

Question 9: Commonly known as cottonwood, it contains three species native to North America, Europe and western ________.
AsiaMiddle EastContinentSingapore

Question 10: Cottonwoods serve as food for the caterpillars of several ________ (see list of Lepidoptera that feed on poplars).
ChoreutidaeGalacticidaeLepidopteraCallidulidae







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