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Biology

Human Nutrition Chapter 28

QuestionAnswer
What is nutrition? Nutrition is the way in which an organism gets and uses its food.
What are the two main types of nutrition? Explain. Autotrophic - an organism makes its own food e.g. plants by photosynthesis Heterotrophic - an organism takes in food from its environment e.g. animals, fungi, bacteria
What are the three types of heterotrophs? Herbivores (feed on plants) Carnivores (feed on other animals) Omnivores (feed on plants and animals)
What are the two subdivisions of heterotrophs? Parasites and Saprophytes
Where do they get their food? Parasites take in their food from a live source e.g. fleas and disease-causing bacteria Saprophytes take in their food from a dead source e.g. bacteria and fungi that cause decay
Do all animals have a digestive system? Prove your answer. No e.g. tapeworms and some sponges. Instead each cell in these animals have a full range of digestive enzymes.
Created by: jcoutinho
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