Biomes Assessment

Which two ecosystems are most similar to one another?

• pond and lake

• desert and pond

• ocean and forest

• grassland and forest

Which organisms are most likely to be found in both a pond and a lake ecosystem?

• algae, fish, insects

• fungi, trees, squirrels

• zebras, giraffes, insects

• plankton, fish, crocodiles

Why are salt marshes and estuaries important for ocean life?

• They minimize damage to oceans during hurricanes.

• They filter salt out of river water before it enters the oceans.

• They provide safe, nutrient-rich breeding areas for ocean organisms.

• They increase the amount of sediment able to settle on the ocean floor.

Which correctly compares lakes and ponds?

• Ponds are usually larger and deeper than lakes.

• Lakes are usually larger and deeper than ponds.

• Ponds usually contain salt water, while lakes contain freshwater.

• Lakes usually have the same temperature from top to bottom, while ponds do not.

Which ecosystem would most likely be home to crabs and oysters?

• estuary

• forest

• grassland

• lake

Which best describes the differences between an ocean and a lake ecosystem?

• an ocean ecosystem is brackish water; a lake ecosystem is freshwater

• an ocean ecosystem is salt water; a lake ecosystem is brackish water

• an ocean ecosystem is salt water; a lake ecosystem is freshwater

• an ocean ecosystem is freshwater; a lake ecosystem is salt water

Which best explains how two ecosystems benefit each other?

• Oceans provide water for plants trying to survive in deserts.

• Estuaries provide a safe breeding area for ocean organisms.

• Grasslands provide food for organisms living in oceans.

• Forests provide a hiding place from fires in grasslands.

Which is a main difference between a grassland and a forest ecosystem?

• The amount of trees in a grassland is greater than in a forest.

• The amount of trees in a forest is greater than in a grassland.

• The amount of salt water in a grassland is greater than in a forest.

• The amount of salt water in a forest is greater than in a grassland.

Which best compares a lake and an estuary ecosystem?

• They both have plants growing in their deepest water.

• They are both affected by the daily changing of tides.

• They both contain a mixture of salt water and freshwater.

• They are both affected by seasonal changes in water temperatures

How are lake ecosystems different from estuary ecosystems?

• Estuaries have only freshwater and lakes have only have salt water.

• Estuaries have only salt water and lakes have only have freshwater.

• Lakes are almost always salt water and estuaries are brackish water.

• Lakes are almost always freshwater and estuaries are brackish water.