Plant cells often have a large membrane-bound sac that is used for storing water and other substances called a:
A. central vacuole.
B. Golgi body.
C. centriole.
D. chloroplast.
E. nucleus.
A. central vacuole.
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Reef systems
a. be all be destroyed within 30 years. b. are formed from calcium carbonate secreted by coral polyps. c. have symbiotic dinoflagellates in the living coral. d. have shown widespread bleaching; death of corals is being reported worldwide. e. include all of these.
A mutation that leads to the buildup of homogentisic acid causes ____________________. Fill in the blank(s) with the appropriate word(s)
Which of the following statements correctly distinguishes between microevolution and macroevolution?
a. Macroevolution can lead to microevolution after a long period of time. b. Macroevolution occurs faster than microevolution. c. Macroevolution is limited to changes in allele frequencies without speciation. d. Macroevolution includes speciation, while microevolution does not. e. Microevolution occurs by a fundamentally different process than macroevolution.
What is the function of pine resins?
A. transportation of sucrose to the roots B. triggering of seed maturation C. aiding in pollen dispersal D. reduction of fungal and insect attack