Which of the following statements is true about the fertilization process in flowers? a. the egg cell is fertilized by the sperm cell in the ovary of the flower. b. the pollen grain contains the female reproductive cell of the flower. c. fertilization takes place before pollination. d. fertilization can only occur after pollen from a different plant has pollinated a flower.

Which of the following best describes the expensive tissue hypothesis? brains require more energy, so the gut had to be reduced, and larger brains and tool use led to higher quality diets. increasing body size means that homo neanderthalensis had to include more fat in its diet. brains require more energy, so the gut had to be reduced as brains got bigger. brains require more fat, so the gastrointestinal viscera (gut) had to expand, and hands were needed to acquire more food.