Ch. 8 Review

In which of the following pairs do both organisms belong to the same population?

• Rose and carnation

• Zebra and horse

• 2 residents of NYC

A population will most likely deplete the resources of its environment if the population…

• Grows beyond carrying capacity

• Shares resources with other species

• Frequently moves from one habitat to another

Which of the following is an example of competition between species?

• 2 species of insects feeding on the same rare plant

• A bobcat hunting a mouse

• A tick living on a dog

Which of the following statements about parasitism is true?

• Parasitism is a cooperative relationship between 2 species

• Parasites always kill their hosts

• Parasitism is similar to predation

Ants and acacia trees have a mutualistic relationship because…

• They are part of the same ecosystem

• They benefit each other

• The ants eat parts of the acacia tree

Which of the following is an example of coevolution?

• Flowers that can be pollinated only by one species of insect

• Rabbits that invade a new habitat

• Bacteria that suddenly mutate in a lab

What determines the carrying capacity of an environment?

• Growth rates

• Limiting resources

• Natural selection

Which of the following statements can be made about competition between organisms in a particular ecosystem?

• Organisms compete directly when they require the same resources

• Organisms only compete when resources are limited

• Organisms rarely compete with member of their same species

Which of the following describes a species’ niche?

• The unique role a species plays in an ecosystem

• The physical location where a species lives

• The adaptation of a species to its environment

Which of the following expressions is used to calculate the change in population size?

• Birth + death + population

• Birth – death

• Birth – death + population