Lignified, tube-like structures that branch throughout the body of some plants, conducting water and
solutes, are called ____.
a. vascular tissues
b. apical meristems
c. root systems
d. rhizomes
e. shoot systems
A
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Although females prefer males with the longest tails, very long tails are typically not found
among males in their natural environment. Why might this be the case?
a. Male birds with very long tails are easily captured and eaten by predators, so they do not survive to reproduce. b. Male birds prefer having shorter tails. c. Mutations have kept tail lengths from increasing. d. There is no advantage to having increased tail length in the natural environment.
Who does not gain when a tariff is imposed?
a. domestic producers of the good. b. domestic workers in the protected industry. c. domestic consumers of the good. d. domestic suppliers in the protected industry.
Which population of organisms would be in the greatest danger of becoming extinct?
a) a population of organisms having few variations living in an unstable environment b) a population of organisms having many variations living in an unstable environment c) a population of organisms having few variations living in a stable environment d) a population of organisms having many variations living in a stable environment
Cilia
What will be an ideal response?