symbiosis and energy flow

A relationship between two organisms in which both organisms benefit

• Mutualism

• Competition

• Parasitsm

• Commensalism

Fungi form lichens (a small plant) by living in a close relationship with algae. The fungus provides a protective home for the algae, and gathers nutrients from rainwater. The algae gathers energy from the sun using photosynthesis. Both organisms share nutrients with each other.

• commensalism

• mutualism

• parasitism

• predation

Gall Insects lays their eggs in the leaves or branches of Oak trees. Oak trees provide shelter and food to the insect larvae.

• commensalism

• mutualism

• parasitism

• predation

Honeyguide birds find a bee hive, then chatter loudly to attract the Honey badger. They fly toward the hive making sure the badger is following. Upon arrival at the bee hive, the badger tears open the hive and feasts on the honey. Then the Honeyguide bird feeds on the remaining wax and larvae.

• commensalism

• mutualism

• parasitism

• predation

Hookworms can enter the body of animals or even humans. The hookworm attaches to the lining of the intestinal wall and feeds on blood. Its eggs are ejected into the digestive tract and the larvae (young hookworms) that hatch live off of the host’s blood. The host can suffer from blood loss, anemia and iron deficiency.

• commensalism

• mutualism

• parasitism

• predation

A relationship between 2 organisms in which one organism benefits and the other is harmed

• commensalism

• parasitism

• mutualism

• predation

Organisms that make up the living part of an ecosystem.

• abiotic
• biotic factors
• ecology
• ecosystems

In an ecosystem, producers and consumers are both __________.

• biotic factors
• very nice
• cranky
• abiotic factors

Barnacles create home sites by attaching themselves to whales. This relationship neither harms nor benefits the whales. 

• parasitism
• commensalism
• mutualism

Yucca flowers are pollinated by yucca moths. The moths lay their eggs in the flowers where the larvae hatch and eat some of the developing seeds. Both species benefit. 

• parasitism
• commensalism
• mutualism