Mod 9

What are some examples of phytoplankton and what are some examples of zooplankton?

Phytoplankton: plankton that performs photosynthesis

• Diatomes - primary produicers. Used as indicators of water quality due to their sensitivity to environmental changes.

• Dinoflagellates- Cause harmful algal blooms that can produce toxins

Zooplankton- diverse range of small aquatic organisms

• Krill - small crustaceans, serving as primary food for larger animals such as whales and seals

• Ostrocods - crustaceans protected by bivalve-like shell

What is the concept of counterillumination and what is it used for? Which portions of the organisms would be illuminated?

Active camouflage where an organisms emits light from its underside to match the brightness of the background light above. Making it less visible to predators or prey. The underside of the body would be illuminated.

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