AP_ Unit 9_ Ecology_ COMMUNITY ECOLOGY (Ch. 54)

What is the term that refers to all the populations in a given area?

• Population

• Community

• Ecosystem

• Biosphere

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Bird & Tree: A bird builds a nest in a hole in the trunk of the tree. It is protected from the rain and predators. The tree is not harmed or helped by the bird.

• Mutualism

• Commensalism

• Parasitism

A human & a Tape Worm: The tape worm gets a place to live in the intestines of the human and food from the human. The human loses weight and nutrients from the tape worm.

• Mutualism

• Commensalism

• Parasitism

What type of symbiosis?  Hummingbirds feed on nectar from flowers.  The flowers are pollinated by hummingbirds as they move from flower to flower.

• commensalism
• mutualism
• parasitism
• predation

Tree kangaroos live in the upper branches of trees in the rainforests of Queensland, as well as on the island of New Guinea. This is an example of the tree kangaroos ___.

• niche

• habitat

• community

• population

Study of interactions between organisms and their environment

• niche

• community

• ecology

• ecosystem

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NGSS.MS-LS2-4

Rabbits and deer eat lettuce leaves from a garden.
^{What ecological interaction describes the relationship between rabbits and deer?}

• Mutualism
• Competition
• Commensalism
• Predation

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NGSS.MS-LS2-2

Primary succession is...

• When a hurricane causes a river to flood its banks

• When a farmer ploughs his fields to remove all existing plant life.

• When fire burns through a forest and ills all vegetation less than 1m tall.

• When increasing temperature causes a glacier to recede from an area of rocky ground where nothing has ever grown/lived before

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NGSS.MS-LS2-4

An example of secondary succession is

• lichens and mosses arrive on bare rock and begin to trap soil

• a complex, stable ecosystem is formed

• plants grow in an area devastated by a flood

• plants grow in a newly formed pond

A keystone species is...

• the top carnivore.

• has the largest population.

• has the most specialized niche.

• determines numbers and types of other species.

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