Daphnia pulex grows protective armor upon sensing chemicals produced by the predatory phantom midge by the process of ________
A) barrier defense
B) inducible defense
C) stimulatory defense
D) predatory defense
B
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Imagine that you have two people using breathing gear under water. Diver 1 is using an old style "rebreather" that removes carbon dioxide before the mixture is "rebreathed" and therefore decreases overall carbon dioxide concentrations in the blood. Diver 2 is using regular SCUBA gear and is breathing air with the normal amount of carbon dioxide that does not lower blood levels of carbon dioxide.
Which diver would have a higher blood pH and which would feel more an "urge to breathe"? A. Diver 1 would have higher blood pH and would feel the "urge to breathe" sooner. B. Diver 2 would have higher blood pH and feel the "urge to breathe" sooner. C. Diver 1 would have higher blood pH, while Diver 2 would feel the "urge to breathe" sooner. D. Diver 2 would have higher blood pH, while Diver 1 would feel the "urge to breathe" sooner. E. There would be no difference in blood pH or breathing between the two divers.
Which lineage has the largest number of Hox genes, reflecting their complex anatomy?
a. cnidarians b. cephalochordates c. vertebrates d. arthropods e. eurochordates
Cephalization refers to
a. a type of symmetry. b. a type of segmentation characteristic of lower forms of life. c. a group of protective cells found in the tentacles of a polyp. d. a transitional state in the life cycle of a jellyfish. e. none of these.
When you squeeze an air-filled party balloon you increase its
What will be an ideal response?