Ecology Quiz 2/25

What is an autotroph?

• An organism that does photosynthesis to get food energy

• An organism that does cellular respiration to get energy from the sun

• An organism that eats other animals

• An organism that eats plants

Which of these is a biotic limiting factor?

• Flooding

• Wildfires

• Competition between organisms

• Access to water

What is a consumer?

• An organism that does photosynthesis to get food energy

• An organism that does cellular respiration to get energy from the sun

• An organism that eats other organisms

• An organism that only eats plants

What is a decomposer?

• An organism that does photosynthesis to get food energy

• An organism that eats dead organisms for energy

• An organism that eats other animals

• An organism that only eats plants

What does carrying capacity mean?

• Anything that limits or restricts population size

• The amount of individuals in a population a habitat can support

• Number of individuals in a population in a given area

What is the carrying capacity on this graph?

• 60

• 80

• 100

• 120

Bees feed on nectar from flowers and while doing so, spread pollen between plants allowing them to reproduce. This is an example of:

• Mutualism

• Commensalism

• Parasitism

Orchids grow on the trunks and branches of other trees. They can access water and sunlight from their position high up on the tree but do not take any nutrients from the host. This is an example of:

• Mutualism

• Commensalism

• Parasitism

The phorid fly lays eggs in the head of the leaf-cutter ant. The ant often ends up dying. This is an example of:

• Mutualism

• Commensalism

• Parasitism

True or False? Most populations in nature follow a pattern of exponential growth.

• True

• False