You trim two different houseplants. The first houseplant becomes bushier, but the pruning does not affect the growth of the second plant. A possible explanation is ________
A) you removed the axillary bud on the first plant but not the second
B) the second plant forms tubers, but the first plant does not
C) the first plant has compound leaves and the second plant has simple leaves
D) you removed the terminal bud on the first plant but not the second
D
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Human infants of extremely low or high birth weights survive at lower rates than do babies of average birth weight. This is an example of ________ selection
a. directional b. disruptive c. stabilizing d. sexual
Certain groups of cells move inward from the surface of the blastula in a carefully orchestrated migration called
A. blastulation B. archenteron formation C. morula formation D. gastrulation E. cleavage
A rise in oxygen in Earth's air and seas put organisms that engaged in _____ at a selective advantage
a. aerobic respiration b. fermentation c. photosynthesis d. sexual reproduction
What is/are the important biological function(s) of polysaccharides?
a. energy storage b. structural support c. enzymatic activity d. information storage A. A and B B. B and C C. B and D D. A, B and C E. A, B and D