This "Words to Remember" worksheet challenges students to identify key freshwater ecosystem terms, such as lentic and lotic, based on their definitions.

Let’s go through each definition one by one and match it with the correct term.

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First definition:
> The nature of a stationary or still body of water, as in lakes or ponds.

This is talking about water that doesn’t move — like a lake or pond. The word for this is lentic. (Think: “lent” sounds like “still” — not moving.)

✔ So first blank = Lentic

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Second definition:
> The region of a lake close to the shore.

This is the shallow part near the edge of a lake where plants grow and sunlight reaches the bottom. It’s called the littoral zone.

✔ Second blank = Littoral

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Third definition:
> The nature of a flowing body of water, as in rivers and streams.

This is the opposite of still water — it moves! Rivers and streams flow. The word for this is lotic. (Think: “lot” like “a lot of movement”.)

✔ Third blank = Lotic

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Fourth definition:
> An aquatic ecosystem where the land is partially or completely submerged.

This describes wetlands — places like marshes, swamps, or bogs where water covers the soil either all the time or sometimes. The general term is wetland.

✔ Fourth blank = Wetland

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Fifth definition:
> An aquatic ecosystem is characterized by its low-salt content.

This is describing freshwater ecosystems — lakes, rivers, ponds — which have very little salt compared to oceans. The key word here is freshwater.

✔ Fifth blank = Freshwater

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Final Answer:
Lentic
Littoral
Lotic
Wetland
Freshwater