Tuesday, April 28, 2009


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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