The openings in leaves that function to exchange gases are called:
a. cuticles
b. stomata
c. guard cells
d. pits
e. pores
b
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Structural isomers differ from each other ____
a. in the arrangement of their covalent bonds b. in their molecular formulas c. by being mirror images that cannot be superimposed on each other d. by having double covalent bonds instead of single bonds e. by having different atomic isotopes in their molecules
Organelles do all of the following EXCEPT
a. manufacture proteins. b. sustain internal microenvironments. c. control import and export of materials. d. transport substances. e. all of the above functions are performed by organelles.
Complete reproductive isolation is evidence that what has occurred?
a. extinction b. speciation c. polyploidy d. hybridization e. gene flow
Bermudagrass is a plant that is commonly used on golf courses. It has a fibrous root system, and its leaf veins are parallel
Because it is mowed on a regular basis in golf courses, it spreads via horizontal stems that root at the nodes, rather than by seed. It can live for many years. What is the best classification for bermudagrass on a golf course? A) It is a perennial monocot that reproduces asexually. B) It is an annual eudicot that reproduces asexually. C) It is a perennial eudicot that reproduces sexually. D) It is an annual monocot that reproduces sexually.