The first plant to colonize the plains of Mt St
Helens after this volcano erupted in 1980 was a
prairie lupine. The prairie lupine is an example
of
a. a secondary successor.
b. a pioneer species.
c. a keystone species.
d. an exotic species.
e. more than one of these.
B
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Beetle pollinators of a particular plant are attracted to its flowers' bright orange color. The beetles not only pollinate the flowers, but they mate while inside of the flowers. A mutant version of the plant with red flowers becomes more common with the passage of time. A particular variant of the beetle prefers the red flowers to the orange flowers. Over time, these two beetle variants diverge from each other to such an extent that interbreeding is no longer possible. What kind of speciation has occurred in this example, and what has driven it?
A) allopatric speciation; ecological isolation B) sympatric speciation; habitat differentiation C) allopatric speciation; behavioral isolation D) sympatric speciation; sexual selection E) sympatric speciation; allopolyploidy
Describe amplification of hormone action
What will be an ideal response?
The vestibular canal and the tympanic canal are filled with endolymph
____________________ Indicate whether the statement is true or false.
The primary source of ATP is a series of chemical reactions called _____, which use(s) _____ and _____
mitochondria; lactic acid; calcium sarcomeres; myosin; actin aerobic respiration; oxygen; glucose aerobic respiration; calcium; acetylcholine