We think of amniotes as being more derived types of tetrapods than non-amniotes. Is there evidence that the replacement of terrestrial faunas dominated by non-amniotes with faunas dominated by amniotes was the result of competition?
What will be an ideal response?
There is no real evidence, but the faunal change coincided with profound climatic and vegetational changes that favored the amniote body plan and physiology (see question 3 above).
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The aorta contains specialized sensory nerve endings that respond to stretch of the vessel wall. These pressure-sensitive structures are called aortic arch _________
Fill in the blank with correct word.
The antibody normally constituting the highest percentage of antibodies in the blood is:
a. IgE. b. IgG. c. IgM. d. IgA.
What enzyme breaks the hydrogen bonds between the bases of DNA in preparation for replication?
A. Cyclin D B. DNA helicase C. Spliceosome D. DNA polymerase
The oropharynx is lined with which type of epithelium?
a. stratified squamous b. simple columnar c. pseudostratified d. simple squamous