An animal such as a grasshopper can conserve water because it has an elaborately branching system of tubes within its body that it uses for gas exchange. These tubes are called
A) kidneys. B) flame cells. C) tracheae. D) gills. E) book lungs.
C
You might also like to view...
The cell membrane of P. jirovecii contains _______ rather than _______, which differentiates it from other fungi
a. sterols; cholesterol b. ergosterol; sterols c. cholesterol; ergosterol d. sitosterol; sterols
Four of the five processes listed below promote
transpiration. Select the exception. a. potassium ions pumped into guard cells b. turgor pressure building up in guard cells c. photosynthesis occurring in guard cells d. carbon dioxide entering leaf e. activity of abscisic acid
In some butterfly populations, there are equal frequencies of alleles that code for black and yellow coloration. This is an example of
A) stabilizing selection. B) sexual selection. C) nonrandom mutations. D) directional selection. E) balanced polymorphism.
Bacteria can increase the Earth's temperature by
A) generating a great deal of heat in metabolism. B) producing CH4, which is a greenhouse gas. C) using the greenhouse gas CO2. D) providing nutrients for plant growth. E) oxidizing CH4.