Question: Q: What is the greatest contribution of arthropods to human food supply? Choices: - vegetation - reproduction - hibernation - pollination A:
Answer: pollination

Question: Q: Which form of digestion is a purely physical process that does not change the chemical nature of the food? Choices: - slow - simple - electromagnetic - mechanical A:
Answer: mechanical

Question: Q: Flatworms reproduce sexually. in most species, the same individuals produce both what? Choices: - gametes - heart and sperm - diploid and haploid - eggs and sperm A:
Answer:
eggs and sperm