Estuaries and Intertidal Zones Quiz

What is an estuary?

• A desert area with no water sources

• A dry land with no vegetation

• A place where freshwater from a river mixes with saltwater from the sea

• A mountain region with heavy snowfall

Why are mangroves able to survive in estuaries?

• They can fly away during storms

• They hibernate during low tides

• They have filters in their roots that remove salt from the water

• They absorb excess salt through their leaves

What is the nickname given to estuaries?

• The deserts of the ocean

• The mountains of the water

• The nurseries of the sea

• The forests of the river

What is the intertidal zone?

• The part of the coast covered by water during high tide but exposed during low tide

• A deep underwater trench

• A dry desert area

• A high mountain peak

How do barnacles and mussels prevent drying out during low tide?

• They camouflage themselves as rocks

• They hide in caves

• They run away to deeper waters

• They keep seawater in their closed shells

Which zone in the intertidal zone has the highest biodiversity?

• Rocky zone

• Middle tide zone

• High tide zone

• Low tide zone

What do kelp, mussels, and barnacles do to withstand waves?

• Run away

• Hide in caves

• Anchor themselves

• Float on the surface

What is the main source of nutrients for plants in estuaries?

• Saltwater

• Sunlight

• Air

• Soil

Why are estuaries important for fish migration?

• They help fish adjust to different salinity levels

• They provide shelter from predators

• They offer abundant food sources

• They have warm water for breeding

What can cause harmful algal blooms in estuaries?

• Excessive fishing activities

• Low salinity levels

• Lack of sunlight

• Too much nutrient runoff from farms