If a gardener wanted to help prevent erosion along a slope it would be best to
A. plant grasses because they have fibrous roots.
B. plant grasses because they have taproots.
C. plant trees because they have taproots.
D. plant trees because they have fibrous roots.
Answer: A. plant grasses because they have fibrous roots.
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Organisms that require increased pressure for optimum growth are called
A. osmotolerant. B. osmophilic. C. barotolerant. D. barophilic.
Polyandry is the mating system in which ____
a. one male and one female form a long-term association b. both males and females mate with multiple partners c. one male mates with many females d. one female mates with many males e. both males and females provide care to offspring
Competitive exclusion is based upon the idea that ____
a. one species will voluntarily allow the other to survive b. no two species can completely occupy the same niche c. the larger species will dominate the smaller d. competition is overrated as a factor in species survival e. two species can live together, if they share the same niche but only at alternate times
The female plant structure on which a pollen grain must land for sexual reproduction to occur is the:a
style. b. ovary. c. stigma. d. anther. e. style.