The picture above is that of a typical plant cell. notice the cell wall. the cell wall's main function is to give rigidity and strength to the plant. this allows plants to grow tall instead of laying flaccid on the ground. compare the cell wall of the plant cell to the human body. which system is most similar to the cell wall in function? a) nervous system b) skeletal system eliminate c) digestive system d) cardiovascular system

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.