Which description best fits the lophotrochozoa?

A) As embryos, they have three germ layers that will develop into the organ level of organization as adults.
B) As embryos, they have two germ layers that will develop into the tissue level of organization as adults.
C) Lophotrochozoa are deuterostomes.
D) Lophotrochozoa are primarily a terrestrial group.
E) The lophophore, a flagellated appendage, is used to define members of this group.

According to the fossil record, the oldest vascular plants are placed in which phylum?

A) Rhyniophyta
B) Bryophyta
C) Anthocerophyta
D) Pteridophyta
E) Lycopodiphyta

A research group is monitoring a series of reactions and have determined it is most likely a hydrolysis reaction because the number of ________.

A) water molecules decreased
B) water molecules increased
C) oxygen molecules increased
D) oxygen molecules decreased

Having legs longer than your arms is an example of:

A) an allometric growth pattern.
B) an allopatric growth pattern.
C) an adaptive growth pattern.
D) paedomorphosis.
E) a preadaptation.

Describe an important role that prokaryotes play in commercial technology.

During the absolute refractory period, the cell

A) generates many local potentials.
B) is insensitive to further stimulation.
C) responds to even weak stimuli.
D) reverses the direction of the action potential.
E) is very sensitive.

Which of the following best describes arteries?

A) Strong, rigid vessels that carry blood under high pressure
B) Thin, elastic vessels that transport blood under low pressure
C) Elastic vessels that connect arterioles and venules
D) Fragile vessels that are prone to rupture
E) Strong, elastic vessels that carry blood under high pressure