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

Biology & Microbiology

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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.

Biology & Microbiology

Which lineage has the largest number of Hox genes, reflecting their complex anatomy?

a. cnidarians b. cephalochordates c. vertebrates d. arthropods e. eurochordates

Biology & Microbiology

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.

Biology & Microbiology

When you squeeze an air-filled party balloon you increase its

What will be an ideal response?

Biology & Microbiology