Oceans Multiple Choice Test

Fish use their gills to get _____ from the water.

Which type of aquatic ecosystem is formed from the calcium carbonate shell secreted by animals?

Animals with gills live ________

Which feature is needed in order for a pond animal to obtain oxygen from the water?

The part of the ocean where the water is too deep for sunlight to penetrate to the bottom is called the _____zone.

In an ocean ecosystem, the greatest diversity of organisms is found:

Which of the following would be found at the bottom of an aquatic food chain

Aquatic ecosystems are classified based on the salinity of the water. These two ecosystems are:

Which aquatic biome consists of a mix of fresh water and salt water?

What marine ecosystem is built by tiny animals called polyps?

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