7.2 Marine Ecosystems Exit Ticket

Estuaries are very productive ecosystems because they receive water from______.

• lakes and ponds

• Rivers and Oceans  

• marshes and swamps

• streams and springs

Tags

NGSS.MS-ESS2-4

Which of the following is a correct statement about estuaries?

• Estuaries are always saltwater ecosystems.

• Estuaries are always freshwater ecosystems.

• Estuaries have both freshwater and salt water.    

• Estuaries prevent salt marshes.

Why doesn’t photosynthesis occur in deep ocean water?

• The water temperature is too cold.

• There is no sunlight and it’s very dark.

• There are not enough nutrients.

• The salinity level of the water is too high.

Tags

NGSS.MS-LS1-6

Why doesn’t photosynthesis occur in deep ocean water?

• The water temperature is too cold.

• There is no sunlight and it’s very dark.

• There are not enough nutrients.

• The salinity level of the water is too high.

Tags

NGSS.MS-LS1-6

What is the function of coastal wetlands?

• a. Absorb excess rain

• b. Filters pollutants

• c. Causes flooding

• Only A and B are correct.

Tags

NGSS.MS-LS2-5

NGSS.MS-LS2-4

Most marine organisms are found in what part of the ocean?

• deep ocean waters

• fisheries  

• shallow, coastal waters

• None of the above

Tags

NGSS.MS-LS2-3

Which of the images below depicts a healthy reef ecosystem?

• Image A

• Image B

• Image C

• Image D

Answer explanation

A healthy reef contains abundant corals, sponges, algae, fishes, sea turtles, and other organisms. Only image A shows this diversity of organisms. The other images show problems exhibited by unhealthy reefs. In image B, the corals are bleached and algae is starting to take over. In image C, only star corals are present, possibly because storms or other problems have destroyed the staghorn corals. In image D, only algae and sponges are present because the corals have died out.

Tags

NGSS.MS-LS2-5

NGSS.MS-LS2-3

NGSS.MS-LS2-4

NGSS.MS-LS2-1

Which of the following are threats that affect oceans?

• Pesticide contamination

• Sewage waste

• Overfishing

• All the options are correct.

Tags

NGSS.MS-LS2-5

What do corals use to capture food, for example like zooplankton?

• Calcium carbonate skeleton

• Tentacles

• Mouth

• phytoplankton

Mangroves protect coastlines from erosion by acting as a natural barrier and flood defence. True or false?

• True
• False

Tags

NGSS.MS-LS2-5