8.L.3.2 Review

What happens to a population and to competition when there is a reduction of living space?

• The population expands and competition intensifies 
• Competition strengthens while the population contracts.
• The population increases as competition decreases 
• Competition weakens and the population decreases 

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Which BEST determines the number of wolves that can live in an area? 

• the amount of snow in the area each year
• the number of birds that live in the area
• the number of trees in the area
• the amount of food available in the area

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Kudzu vines grow by climbing and wrapping around trees. Trees covered by kudzu can die because they are starved of sunlight. What type of relationship exists between the tree and the kudzu growing on them?

• competition
• mutualism
• parasitism
• predator-prey

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If wolves prey on deer for food, what will MOST LIKELY happen to the deer population  if wolves are removed from an area where deer live?

• The population of deer will increase
• The population of deer will decrease.
• The population of deer will remain the same.
• The population of deer will become extinct.

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Where do plants get most of the energy they need to live and grow?

• water
• soil
• air
• sunlight

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Fleas harm cats and dogs by living off their blood. Which type of relationship is this?

• Cooperation

• Mutualism

• Parasitism

• Predator/Prey

Populations of wolves and rabbits in and ecosystem are represented by the graph provided. Which best explain the relationship between wolves and rabbits in the ecosystem?

• As the numbers of rabbits increases, the number of wolves increases.

• As the number of rabbits increases, the number of wolves remains constant.

• As the number of rabbits decreases, the number of wolves increases.

• As the number of rabbits decreases, the number of wolves remains constant.

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What is occurring when a variety of organisms live together in the same colony?

• Co-Existence

• Competition

• Homestasis

• Habitat

Which best represents a mutualistic relationship?

• A lion lies in the tall grass watching a herd of gazelles.

• Maggots feed on the decaying remains of a dead animal.

• Insects pollinate a flower while feeding on nectar in the flower.

• A tapeworm takes in digested nutrients in the intestines of a sheep.

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Birds are often seen with cattle in a pasture. The feeding cattle stir up insects and the birds eat the insects. How would this relationship be described?

• The birds have a negative effect on the cattle, and the cattle have a positive effect on the birds.

• The birds have a postivie effect on the cattle, and the cattle have a positive effect on the birds.

• The cattle have a positive effect on the birds, and the cattle are unaffected.

• The cattle have a negative effect on the birds, and the cattle are unaffected.

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