What structures do barnacles use to capture their food?
a. antennae
b. shells
c. legs
d. heads
e. siphons
c
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Refer to the accompanying figure. In every case, caterpillars that feed on oak flowers look like oak flowers. In every case, caterpillars that were raised on oak leaves looked like twigs. These results support which of the following hypotheses?
A) The longer day lengths of summer trigger the development of twig-like caterpillars. B) Differences in air pressure, due to elevation, trigger the development of different types of caterpillars. C) Differences in diet trigger the development of different types of caterpillars. D) The differences are genetic. A female will either produce all flowerlike caterpillars or all twig-like caterpillars. A) The longer day lengths of summer trigger the development of twig-like caterpillars. B) Differences in air pressure, due to elevation, trigger the development of different types of caterpillars. C) Differences in diet trigger the development of different types of caterpillars. D) The differences are genetic. A female will either produce all flowerlike caterpillars or all twig-like caterpillars.
What is the probability that two lizards that are heterozygous for stripes on their tails (Ss) will produce
an offspring that is homozygous for no stripes (ss)? a. 1 b. 1/2 c. 1/4 d. 1/8 e. 0
Changes in temperature affect organisms in temperate climates by altering the following, EXCEPT
A. animal migration times. B. breeding seasons. C. coral reef building. D. leaf budding time. E. flowering times.
Galef and Wigmore (1983) demonstrated cultural transmission of a rat's diet experience
In other words, if a demonstrator had eaten cocoa-flavored food, observers would prefer cocoa-scented food without having experienced the food themselves (see data below, CO = cocoa, CIN = cinnamon). Imagine that, contrary to the reported results, an observer rat's preference for cocoa was based on an innate preference for this flavor. What would the results look like for the corresponding experiment in which the demonstrator fed on cinnamon-flavored food? a. The results would be identical to the data shown above. b. The observer rats would prefer cinnamon instead. c. The observer rats would not discriminate between both flavors. d. The observer rats would eat neither food as they did not have previous experience with cocoa or cinnamon.