Biology 30 - UD C20 - Population Growth and Interactions

The relationship between bees and mites is best described as

• parasitism

• commensalism

• interspecific competition

• intraspecific competition

The intense heat from a forest fire stimulates the germination of dormant seeds, which will be among the first plants to grow in the burned area.

Which of the following identifies the type of succession that occurs after a forest fire and the type of community represented by the first plants that grow in the burned area?

• Succession: Primary

  Community: Pioneer

• Succession: Primary

  Community: Climax

• Succession: Secondary

  Community: Pioneer

• Succession: Secondary

  Community: Climax

The intense heat from a forest fire stimulates the germination of dormant seeds, which will be among the first plants to grow in the burned area.

By burning vegetation, forest fires help to ensure the survival of the first plants to grow in the burned areas by decreasing

• intraspecific competition and increasing density-dependent limiting factors

• interspecific competition and decreasing density-dependent limiting factors

• interspecific competition and increasing density-dependent limiting factors

• intraspecific competition and decreasing density-dependent limiting factors

Which of the following identifies the relationship between a mountain pine beetle and a bluestain fungus and the relationship between a mountain pine beetle and a pine tree?

• bluestain: Commensalism

  pine tree: Predation

• bluestain: Commensalism

  pine tree: Parasitism

• bluestain: Mutualism

  pine tree: Predation

• bluestain: Mutualism

  pine tree: Parasitism

The giraffe’s preference for feeding on leaves at the top of a tree is likely the result of

• interspecific competition

• intraspecific competition

• environmental resistance

• predator-prey interactions

The relationship between mountain lions and wolves is one of

• mutualism

• commensalism

• intraspecific competition

• interspecific competition

Which of the following describes the reproductive strategy of bighorn sheep and provides justification for this classification of the strategy?

• Strategy: K-selected

  Justification: Long period of gestation, only one offspring produced

• Strategy: K-selected

  Justification: Short period of gestation, offspring develops quickly

• Strategy: r-selected

  Justification: Long period of gestation, only one offspring produced

• Strategy: r-selected

  Justification: Short period of gestation, offspring develops quickly

The process by which the recovery of the sea floor habitat will occur after trawlers have been prohibited is called

• primary succession

• secondary succession

• the development of a climax community

• the development of a pioneer community

The growth rate of the bighorn sheep population between 1960 and 2002 was - (a)   sheep/year.

Round your answer to two decimal places.

Which of the following describes the relationship between the organ pipe cactus and insects and between the organ pipe cactus and small mammals?

• Insects: Predation

  Small mammals: Predation

• Insects: Predation

  Small mammals: Mutualism

• Insects: Mutualism

  Small mammals: Predation

• Insects: Mutualism

  Small mammals: Mutualism