Ecology Quiz

The niche includes

• the external surroundings an organism lives in

• how an organism obtains its resources

• the organism's role in its ecosystem

• all of the above

Anything an organism needs for life is called a

• habitat

• resource

• niche

• nutrient

The difference between abiotic and biotic factors is that

• biotic factors are necessary for life, while abiotic factors are not.

• abiotic factors are necessary for life, while biotic factors are not.

• abiotic factors are living things in an organism's environment, while biotic factors are nonliving.

• biotic factors are living things in an organism's environment, while abiotic factors are nonliving.

Select all the biotic factors.

• prey or other food sources

• water

• weather

• mates

• predators

A group of organisms of the same species living in a given area is a

• population

• community

• habitat

• niche

What type of population growth is shown here?

• Logistic

• Limited

• Infinite

• Exponential

Exponential growth can only occur in the ______________ of limiting factors.

• presence

• absence

What type of population growth is shown here?

• Limited

• Exponential

• Logistic

• Infinite

Logistic growth occurs because __________________ cause a population to reach its ___________________.

• resources; exponential growth

• limiting factors; carrying capacity

• abiotic factors; death

• biotic factors; maximum

Select all the density-dependent limiting factors.

• food

• water

• mates

• space

• weather