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- 1. Multiple Choice
Organisms that live in the intertidal zone are adapted to crashing waves and tidal changes. How do barnacles prevent being washed away?
They open their shells
They cling tightly to rocks
Barnacles go with the waves
They store much salt in their bodies
- 2. Multiple Choice
How do organisms exposed to air be able to prevent drying out?
They seal completely their shells
Organism store much water in their bodies
They move up to zones that have plenty of water
Organism feed on other organisms that are watery
- 3. Multiple Choice
If the planktons are removed from the estuary, what may happen to the estuarine food web?
Planktons are producers so their removal may not affect.
The other animals in the estuary will have to find other food sources.
Removal of any organism like the plankton will greatly affect the ecosystem.
Filter feeders like oysters and clams don’t depend on the presence of plankton.
- 4. Multiple Choice
Many shores birds feed on the mudflats of estuaries. When would be the best time for the birds to catch stranded fish and invertebrates?
daytime
high tide
low tide
nighttime
- 5. Multiple Choice
In many desert regions, water is diverted from streams and rivers to people in cities. How does this affect the animals in the area?
The animals migrate to tropical rainforests
The animals move closer to others to get food
The animals stop searching for food and water
The animals become more active in daylight hours
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