Recall that the cuticle seals plant surfaces and helps plants conserve water, and the seed helps derived plant groups to reproduce effectively on dry land. The analogous adaptations in reptiles are ________ (analogous to the cuticle) and ________
(analogous to the seed).
A) scales; jellylike egg masses
B) scales; the amniotic egg
C) scales; aquatic larvae
D) claws; lungs
Answer: B
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If all conditions of Hardy–Weinberg equilibrium are met,
(a) allele frequencies move closer to each generation. (b) allele frequencies change in the direction predicted by natural selection. (c) allele frequencies stay the same. (d) all allele frequencies increase.
New world monkeys have all of the following features except
A. they have flat spreading noses. B. they grasp objects with long prehensile tails. C. they evolved in isolation in South America. D. they are all arboreal. E. they have ischial callosities (thickened rump pads).
Metallic ions such as Ca2+, Na+, and Fe3+ readily form ____
a. polar covalent bonds b. van der Waals forces c. ionic bonds d. hydrogen bonds e. nonpolar covalent bonds
Sucrose is composed of ____
a. two molecules of fructose. b. two molecules of glucose. c. a molecule of fructose and a molecule of glucose. d. a molecule of fructose and a molecule of galactose. e. a molecule of glucose and a molecule of galactose.