Bell work quiz

What is happening at Point A?

• There are more than enough resources for the population.

• There are no resources available for the population.

• There are just enough resources for the population.

What do the two food webs have in common?

• They both have four levels of consumers

• They both contain omnivores

• They both have carnivorous birds

• They both rely on photosynthesis

How does upwelling DECREASE the populations of some organisms

• Upwelling cools surface waters to dangerously low temperatures.

• Upwelling causes algal blooms that deplete oxygen in coastal waters.

• Upwelling moves marine larvae away from their normal habitats

Toxic chemicals from a spill flow down a river to the ocean and kill most of the grasses in an estuary. What will MOST likely happen in the ecosystem?

• Photosynthesis will increase, decay will decrease, and so dissolved oxygen will increase.

• Photosynthesis will increase, decay will increase, and so dissolved oxygen will decrease.

• Photosynthesis will decrease, decay will increase, and so dissolved oxygen will decrease.

During which year did the population MOST likely encounter a severe drought and forest fire?

• 1992

• 1995

• 1996

• 1993

Which statement BEST describes the birds’ relationship generations ago and the relationship today?

• The old relationship was mutualistic. The new relationship is parasitic

• Both relationships are mutualistic.

• Both relationships are parasitic.

• The old relationship was parasitic. The new relationship is mutualistic.

In a completely cooperative relationship, each organism benefits equally. Which sequence lists these relationships in order of increasing cooperativeness?

• parasitism, commensalism, predation, mutualism

• commensalism, mutualism, parasitism, predation

• predation, parasitism, commensalism, mutualism

Which statement correctly describes an energy transfer within this food web?

• The owl transfers energy to the snake.

• The berry bush receives some energy from the grasshopper.

• The fox receives some energy from the berry bush.

• The grasshopper transfers energy to the rabbit.

Kudzu grows so fast it can cover objects and even other plants causing them to die. How does the ability to grow quickly MOST likely help kudzu survive?

• It makes the plant more resistant to disease.

• It uses structures like houses for protection.

• It reduces the competition for resources.

• It allows for new plant species to grow.

Which is an example of symbiosis

• a dandelion growing in a grass lawn

• a dolphin communicating with another dolphin

• a lion hunting a zebra

• a tick feeding on a deer