Limits to Population

Which of the following statements about biotic potential is TRUE?

• Biotic potential varies a great deal by species.

• Biotic potential is only reached when food is limited.

• The biotic potential of a large mammal is high.

• The biotic potential of insects tends to be low.

Which of the following is a density-dependent factor?

• flashfloods

• fire

• typhoons

• predation

The image (on the right) is a population graph from the predator-prey game. Green indicates grass, blue indicates rabbits, and red indicates wolves. The rapid growth in grass shown at the right of the graph is probably due to

• rabbits becoming extinct

• wolves controlling the rabbit population

• rabbits going on diets

• wolves becoming extinct

If a population for a certain organism is above the carrying capacity of an ecosystem, which of the following is a plausible outcome?

• the population will continue to grow because they will start migrating to other ecosystems

• the population will decline, as there is a limited number of resources in the ecosystem

• the population will decline because there will be an increase in predators

• the population will continue to grow until biotic potential is reached

It refers to the maximum capacity of an ecosystem to sustain a population of organisms without deteriorating.

• biological capacity

• biotic potential

• environmental potential

• carrying capacity

List two factors that have limited human population growth in the past.

Discuss the ways by which natural disasters (droughts, floods, hurricanes and fires) affect the population growth.

Which of the following is a limiting factor for marine organisms?

• Weather

• Natural Disaster

• Salinity

• Use of Pesticides

TRUE or FALSE.

Populations can grow indefinitely.

• TRUE

• FALSE

Match the following abiotic factor

• Pollution

• Land

• Salinity

• Human Activity

• Altitude

• Ocean