Recent Class Questions
-
in the ant-treehopper study illustrated in the text, why did the scientists assign plants in the study plot to the ants-present versus ants-removed groups at random—instead of, for example, assigning all the plants on the west side of the plot to the ant-present group and all the plants on the east side to the ants-removed group?
-
what important molecules can be found inside sea urchin oocyte cortical granules? (choose all correct answers)
-
according to the directed-pollination hypothesis, a key reason why there are so many different kinds of angiosperms is that: