Today we started chapter 21 (Digestion) by learning about the two overall methods for how organisms obtain nutrients: ingestion and absorption. We spent most of the time talking about ingestion.
Here's a quick review:
Three categories for WHAT organisms eat: herbivore, omnivore, carnivore
Four categories for HOW organisms (that use ingestion) eat: suspension feeders, substrate feeders, fluid feeders and bulk feeders.
Watch the video below for a detailed explanation of what happens in digestion.
Homework: none
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