Where is temperature variation the greatest?
A) at the poles
B) in the temperate regions
C) in the tropical regions
D) at the equator
B
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A carpel is the
(a) same as a megasporophyll. (b) structure producing pollen grains. (c) component making up the anther. (d) synonym for microsporophyll.
Water molecules are attracted to each other due to the opposite charges created by partial charge separations within the molecules. These attractions are called:
A. peptide bonds. B. covalent bonds. C. ionic bonds. D. hydrogen bonds. E. double bonds.
Monocots include plants such as
A. corn, wheat, lilies, orchids, and palms. B. mosses, ferns, algae, and liverworts. C. roses, clover, tomatoes, oaks, and daisies. D. cycads, ginkgoes, pines, and firs.
Which of the following statements is true?
A) All organisms can use sunlight to produce chemical energy. B) Plants use solar energy to turn glucose into oxygen. C) Cellular respiration occurs only in plants. D) Chemical energy, in the form of glucose, is the primary source of energy for life.