Ecosystems and Populations

Which of the following factors are not abiotic factors affecting terrestrial ecosystems?

• water

• competition

• sunlight

• climate

• disease

Which of the following are factors that affect the type of terrestrial biome/ecosystems that form in a given area?

• the depth of the water at which light reaches in a lake, sea, or ocean

• the amount of sunlight and angle of Earth's inclination

• the amount of precipitation the area receives

• the latitude (how close to the poles/Equator)

In this type of interaction predator captures, kills and eats an animal of another species called the prey is known as

• predation

• mutualism

• parasitism

• interspecific competition

Parasitism involves parasite living in or on another living species called the ___________ from which the parasite gets its nourishment and often shelter.

In this type of interaction, one species is harmed, but not killed, and the other benefits is ___________

• predation

• mutualism

• commensalism

• parasitism

When two populations or organisms from different species, both need a vital resource that is in short supply and both species are harmed to some extent is known as ______________.

• intraspecific competition

• interspecific competition

• predation

• mutualism

In this relationship one of the species benefits while the other is neither harmed nor benefited , here species obtain shelter or transport from another species is known as __________

• mutualism

• parasitism

• commensalism

• intraspecific competition

​ (a)   is when humans introduce non-native species into a habitat. These species can usually grow quickly as there is no ​ (b)   to control the population and they outcompete native species for resources which is an example of ​ (c)   competition

• Bioinvasion
• predator
• interspecific
• intraspecific
• prey
• Mutualism
• Commensalism

Which of the following are examples of density-dependent factors (are affected by population size) that will limit population growth?

• spraying pesticides

• diseases

• the amount of predators in an area

• food availability

Which of the following are examples of density-independent factors (are not affected by population size) that will limit population growth?

• hurricanes

• the amount of prey in an area

• earthquakes

• parasitism