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Use the Abbreviated Key to the Animal Kingdom below to key out this organism.  Select all steps that apply.  

In the experiment below, both test tubes were filled with yellow phenol red. Test tube A (left) contained a plant, and test tube B (right) did not.                  A         B      After 24 hours, the tubes looked like this:                 A          B        [a]  Which test tube represents the control in this experiment? [b]  What process occurred that made test tube A change color? [c]  Was carbon dioxide used, produced, or not changed in tube A? [d]  Were these tests tubes placed in the light or dark? [e]  Was carbon dioxide used, produced, or not changed in tube B?

Is a kitchen countertop an area that would normally support the growth of microorganisms? If not where would the microbes most likely come from?  

Describe 2 distinct characteristics of Chondrichthyes.

There is no direct benefit for an organism to exhibit altruistic behavior.

Describe 2 distinct characteristics of Amphibia.

Identify the correct Phylum for this organism.    

Male elephant seals roar to display their dominance and fight off any rivals trying to breed with their harem of females.

Describe 2 distinct characteristics of Reptilia.

Use the Abbreviated Key to the Classes of Chordata to key out this organism. Select all key steps that apply.