The organisms of the intertidal are subject to daily changes in all except:
a. exposure to air.
b. desiccation.
c. wind and waves.
d. low light levels.
e. heat.
D
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Some green algae exhibit alternation of generations. All land plants exhibit alternation of generations
No charophytes (stoneworts) exhibit alternation of generations. Keeping in mind the recent evidence from molecular systematics, the correct interpretation of these observations is that _____. A) charophytes are not related to either green algae or land plants B) plants evolved alternation of generations independently of charophytes C) alternation of generations cannot be beneficial to charophytes D) land plants evolved directly from the green algae that perform alternation of generations E) scientists have no evidence to indicate whether or not land plants evolved from any kind of alga
10. One of the two major distinguishing characteristics of mollusks is
(a) the presence of three body regions. (b) the mantle. (c) segmentation of the body. (d) jointed appendages.
When the size of a cell increases, the surface area/volume ratio
A) decreases initially and then begins to increase. B) remains the same. C) decreases. D) increases initially and then begins to decrease. E) increases.
An aneurysm is a weakening of the walls of a blood vessel. Which of the following blood vessels would be most likely to break open if an aneurysm is present?
A) capillary B) lymph duct C) artery D) venule