Based on what we know today, what is the best explanation for why the emu, ostrich, and rhea are so
similar despite being geographically separated? What will be an ideal response?
The emu of Australia, the ostrich of Africa and the rhea of South America were at one time all on the
same land mass, and thus had a common ancestor. It was continental drift that was responsible for
separating them.
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Stomata close when ____ guard cells and they become ____
a. active transport pumps H+ into; turgid b. active transport of H+ stops in; flaccid c. active transport pumps H+ out of; turgid d. active transport pumps H+ into; flaccid e. active transport of H+ stops in; turgid
The antibodies that activate the complement system are
a. IgA and IgD. b. IgG and IgM. c. IgG and IgD. d. IgE and IgM. e. IgA and IgE.
Which group of microbes contains organisms necessary for production of wine and bread?
A. Bacteria B. Archaea C. Algae D. Fungi
If in a lichen, the fungal partner is a
cyanobacterium, what does the fungus receive from its partner?
a. sugars b. nitrogen compounds c. oxygen d. oxygen and sugars e. nitrogen compounds and sugars