1. How are algae and polyps related?
The polyps receive carbon dioxide from the algae.

The polyps embed themselves in the flesh of the algae.

The polyps get most of their food from the algae.

The polyps receive shelter from the algae.

2. Which word best describes the relationship between polyps and algae?
bleached

photosynthetic

exoskeletal

symbiotic

3. The definition of symbiotic is
having a hard external covering.

consisting of two oxygen atoms.

living in close association.

having tiny tentacles.

4. What happens to algae when the temperature in the ocean becomes too hot?
The algae become pale.

The algae photosynthesize faster.

The algae lose their ability to photosynthesize.

The algae are susceptible to infection.