ecosystems quiz 7th

How have mangrove trees adapted to living in estuaries?

• Their roots filter salt from the water.
• Their leaves are small and waxy to keep water from evaporating.
• They have spines to protect them from being eaten.

Which of the following describes coral?

• A rock
• A plant
• An animal

The angler fish has an adaptation that creates light. What is the adaptation used for?

• The light helps it see better in the dark.
• The light lures its prey to its mouth.
• The light distracts predators from eating it.

In the ocean, bacteria are decomposers. What is the role that decomposers have in a saltwater ecosystem?

• They make food using the sun’s energy.
• The eat plants in the ocean.
• They break down dead material.
• They eat animals in the ocean.

Which is true of saltwater ecosystems?

• All saltwater ecosystems are warm.
• All saltwater ecosystems are cold.
• All saltwater ecosystems are salty.
• All saltwater ecosystems are deep.

Which of the following is a producer living in the ocean?

• Coral
• Kelp
• fish
• crabs

Why do many plants in the desert have small leaves?

• The plants do not need to make food.
• It reduces the amount of water released by the plant during transpiration.
• It discourages animals from eating them.

Why does it benefit an animal to be nocturnal in the hot desert ecosystem?

• There is more food available at night.
• It is warmer at night.
• It is cooler at night.
• The plants close their leaves at night.

Which of the following is a producer living in the desert?

• Kangaroo rat
• Burrowing owl
• Cactus
• Rattlesnake

What is a benefit of storing fat in a specific place for an animal?

• Not having fat surround their body allows an animal to release heat and stay cooler.
• Not having fat surround their body allows them to move faster.
• Not having fat surround their body makes them less sleepy.
• Not having fat surround their body allows them to quickly access it when they are hungry.