In suggesting alternative hypotheses to explain figure 18.18, your lab partner states that perhaps mosses didn't evolve until recently, which is why they increase after herbs and shrubs. Which of the following would be the best response to your lab partner?
a. Mosses were actually the first land plants to appear
b. Mosses are better adapted to dry climates
c. All land plants appeared at roughly the same time
d. If you look carefully at the graph, there were a few mosses present 300,000 years ago, so they probably arose then
e. Mammoths probably ate the mosses, so they did not appear until after the mammoths went extinct
Ans: a. Mosses were actually the first land plants to appear
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