The rapid expansion of angiosperms late in the Mesozoic era appears to be related to their coevolution with ____
a. dinosaurs
b. gymnosperms
c. insects
d. mammals
e. birds
ANSWER: c
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A phylogenetically-based taxonomy is important not only in creating a logical way to name organisms, but also in learning about ________ of organisms using information in related species. Check all that apply.
_____ physiology _____ behavior _____ development _____ morphology
Steroid hormones, such as testosterone and estrogen, are polar signaling molecules
a. True b. False
In a reflex arc, where does the synapse between a sensory neuron and a motor neuron occur?
a. in the brain b. between the receptor and the spinal cord c. within a muscle d. within the spinal cord e. in the nerve leading to the spinal cord
What is the common influence of ultraviolet light on DNA?
What will be an ideal response?