Fecundity is ____
a. a summary of the demographic characteristics of a population
b. a group of individuals of similar age
c. the average number of offspring produced
d. the proportion of individuals alive at the start of an interval that die during that interval
e. the proportion of individuals alive at the start of an interval that survive to the start of the next interval
ANSWER: c
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Most bony fishes are considered to be much more efficient at maneuvering than cartilaginous fishes. Explain why this is so and how it arose
What will be an ideal response?
Specialized islet cells that secrete hormones are found scattered throughout the:
a. adrenal cortex b. liver c. thymus d. adrenal medulla e. pancreas
In the peacock butterfly experiment, what was
the conclusion?
a. predatory birds are not deterred from eating peacock butterflies with spots b. predatory birds are deterred by peacock butterfly clicking sounds c. peacock butterflies with spots mated more often than those without spots d. predatory birds are deterred by the dark color of the peacock butterfly e. peacock butterflies that made clicking sounds attracted more predatory birds
Which of the following is false regarding smallbodied
invertebrates of aquatic or continually moist environments? a. They have the simplest forms of respiration. b. Gases diffuse across the body surface coverings. c. They do not have specialized oxygentransporting cells. d. They depend on integumentary exchange for respiration. e. None of these are false.