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- 1. Multiple Choice
At which labeled location would a rain forest most likely be found?
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2
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4
- 2. Multiple Choice
Which of these explains why an ecosystem is healthy when it has a variety of species?
An increased number of species allows for fewer food chains.
A larger number of species reduces competition for abiotic resources
A larger number of species allows for greater diversity in interdependence.
An increased number of species contributes to greater chances for adaptability.
- 3. Multiple Choice
Estuaries are called “the nurseries of the sea” because many species lay eggs and develop their young in estuaries. Which two features of estuaries support this role most?
concentrated nutrients and a steep salt gradient
abundant shelter and concentrated nutrients
a steep salt gradient and shallow water
shallow water and abundant shelter
- 4. Multiple Choice
What is the main reason for concern about the destruction of coral reefs related to global warming?
The most colorful fish live in coral reefs.
Coral reefs are ideal locations for studying marine life.
Hundreds of thousands of species depend on coral reefs.
Coral reefs can reduce shoreline damage from tsunamis.
- 5. Multiple Choice
Why are seals able to live off the coast of Antarctica while frogs, snakes, and panthers are not?
Seals can swim.
Seals are predators.
Seals have fur and blubber.
Seals are warm-blooded animals.
- 6. Multiple Choice
In some New Zealand estuaries, shellfish-bed populations have declined due to habitat modification and overharvesting. How will this affect the biodiversity of these ecosystems?
Biodiversity will increase along with the number of shellfish people can harvest.
Biodiversity will increase along with the value of the shellfish when people sell them.
Biodiversity will decrease as well as the number of available shellfish.
Biodiversity will decrease as well as the competition for harvesting shellfish.
- 7. Multiple Choice
Which characteristic below describes a jaguar’s niche?
hunts during the night.
has a coat with dark spots.
gives birth to up to four cubs.
has a life span of 12 to 15 years.
- 8. Multiple Choice
In which way are rainforests and coral reefs different from ecosystems with few species?
There are more prey than predators.
The food web is more stable and lasting.
Organisms often must compete for food.
Plant populations are the primary producers.
- 9. Multiple Choice
The temperate deciduous forest and temperate grassland biomes have the same maximum temperature. Which of the following is a reason they have different plant and animal species?
they are at different altitudes
they are at different latitudes
the forest gets more precipitation
the grassland gets more precipitation
- 10. Multiple Choice
Which of these is a threat to the survival of an ecosystem?
predator-prey population cycles
less biomass at higher levels of the food web
a shrinking variety of animal and plant species
competition among some consumer populations
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