You looked at a slide similar to this.

What was it a slide of?

Zooplankton

What is the organismthat the “arrow” is pointing to?

A copepod

Identify this organism

This is a copepod which is an abundant component of zooplankton

Why are organisms like this referred to as “cows of the sea”?

Copepods are major grazers of phytoplankton

Identify this organism

Diatom

What are the shells or tests of these phytoplankton made of?What are these organisms?

SiO2 or Glass

Diatoms

These organisms have a large oil filled vacuole. They also have chloroplasts. Are they an example of phytoplankton or zooplankton? What are they?

They are capable ofphotosynthesis thusthey are phytoplankton.

Diatoms

How do these diatoms maintain their position close to the ocean surface so that they get plenty of sunlight for photosynthesis?

They have oil filledvacuoles which helpthem float.

Identify Structure

Identify Structure

Identify Structure

The nucleus

The nucleolus

The cell membrane

What’s this stuff?

Cytoplasm

What are these?

Unfertilized sea star eggs

Kingdom?

What are these?

Are they zooplankton or phytoplankton?

Protista

Foraminiferans

Zooplankton

What are the shells of these organisms made of?

Calcium carbonate or limestone

Kingdom ProtistaZooplanktonRadiolarian Strew

Note that the shells or tests are made of silica dioxide (glass)

What is the shell or test of these organisms made of?

Calcium carbonate or limestone

These organisms belong to Kingdom Protista They are a type of zooplankton What is the common name of these organisms?

Radiolarians

What are the shells of these organisms made of?

Silica dioxide or glass