While on a hike, you notice that several burrs have become attached to your socks. You quickly pull them off. Inside the burr are several seeds. Burrs are produced by certain plants and frequently catch on animal fur (or people's clothing)
After thinking about it, you decide that the burr is a type of ________ that is an adaptation for ________. A) leaf...protecting plants from herbivores
B) fruit...seed dispersal
C) cambium...seed protection
D) pollen grain...successful pollination
B
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Research in Colorado’s San Juan Mountains has illustrated that in comparison to stands of lodgepole pine and Englemann spruce, stands of trembling aspen are not likely to ____.
a. grow in warmer soil b. grow in soil with higher nitrate concentrations c. be associated with different arrays of soil-dwelling organisms d. allow more sunlight to reach the soil surface e. retain their leaves through the winter
Which protist group includes members with plantlike traits such as chloroplasts and multicellularity?
A. Algae B. Slime molds C. Amoebas D. None of the protists are multicellular.
Meiosis II results in the formation of cell number
a. 2. b. 3. c. 4. d. 5. e. 4.
Enzymes can have both active and regulatory sites. What is the purpose of these sites?
A.) the binding of CTP at a regulatory site on the protein causes decreased production of carbamoyl aspartate B.) the binding of CTP at a regulatory site on the protein causes increased production of carbamyl aspartate C.) the binding of CTP at the active site on the protein causes decreased production of carbamoyl aspartate D.) the binding of CTP at the active site on the protein causes increased production of carbamoyl aspartate