If there were no fungi, which of the following would occur?
A) Plants would overrun the Earth.
B) Nutrient recycling would stop.
C) Oxygen production would stop.
D) Grazing animals would be unable to digest plants.
B
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It is not necessary to define the type of data in a field because the DBMS will do it for you.
Indicate whether the statement is true or false.
As trees get larger and the number of leaves increase, transpiration rates rise and demand for water increases. How do plant tissues meet this demand for water?
A. Cells of the xylem continue to divide and produce more cells that transport water. B. Vascular cambium continues to divide, and cells of its inner surface differentiate to form additional secondary xylem cells. C. Cells of secondary phloem adjacent to the vascular cambium differentiate into xylem cells. D. Cells present in the pith closest to the xylem differentiate into xylem cells.
Although bees carry pollen from tulip flowers to the blossoms on cherry trees, hybrid seeds are not produced because of
A) gametic isolation. B) temporal isolation. C) ecological isolation. D) mechanical isolation. E) All of these
In his book The Origin of Species, Darwin argued that species living today descended from a succession of ancestral species. What mechanism did Darwin propose to explain how evolution occurs?
A. competition B. natural selection C. artificial selection D. overproduction