CHECK YOUR UNDERSTANDING

 

1) What does each stage look like?
Fertilized
16 Cell
Blastula
Gastrula
Prism

2) What's happening in each image?

3) How big is a sea urchin egg?

4) How big is a sea urchin sperm?

5) What do sea urchins eat?
Seaweed
Each Other
People!
Dead Fish
Live Fish