Ecosystems Review

Which best describes a competition relationship?

• Two monkeys fight over the last banana

• A bacteria feeds on the skin of a human

• A barnacle lives on a whale and the what does not notice

• Bees work together to build a hive they can live in

A group of organisms of the same species living together is called a....

• Community

• Population

• Ecosystem

• Biosphere

What is a nonliving factor in an ecosystem?

What is the original source of all energy on Earth?

Check all that apply:

What organisms will convert sunlight energy to sugar?

• Producer

• Consumer

• Heterotroph

• Autotroph

• Plant

Two organisms of a different species share a close relationship in which both benefit. What is this called?

• Commensalism

• Mutualism

• Parasitism

Two organisms share a close relationship where one benefits and the other is harmed. What is this called?

• Mutualism

• Commensalism

• Parasitism

True/False: Predictable fluctuations in a population are a sign of a stable ecosystem

• True

• False

What type of organism must hunt and kill other organisms for food?

• A parasite

• A predator

• A competitor

In which trophic level on an energy pyramid can you find the most available energy?

• The bottom layer

• The middle layer

• The top layer