The mosses, liverworts, and hornworts are
members of which group?
a. conifers
b. ferns
c. gymnosperms
d. bryophytes
e. angiosperms
D
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In lactation, milk production is stimulated by _____, while milk release is stimulated by _________.
A. oxytocin, prolactin B. progesterone, oxytocin C. prolactin, oxytocin D. prostaglandin, oxytocin E. progesterone, prolactin
The process during which potassium and hydrogen
ions, penicillin, and some toxic substances are put into the urine by active transport is a. tubular secretion. b. reabsorption. c. filtration. d. countercurrent multiplication. e. diffusion.
Which of the following represents acclimation?
A) Deeper beaks evolve in a population. B) Marine lionfish are able to tolerate freshwater in estuaries. C) Tropical trees grow taller than temperate ones to compete for light. D) Poisonous animals are brightly colored to ward off predators.
Why don't ants that protect the Acacia tree scare off bees trying to pollinate the tree's flowers?
A. Parasitoid wasps protect the bees from attack. B. The bees fly in and out quickly. C. They can't climb to the tops of the tree. D. The open flowers contain a chemical that is an ant deterrent. E. The bees are too big.