Food relationships

In a mutual relationship, both organisms are ________________. 

• hurt
• not effected
• harmed
• benefiting 

In a parasitic relationship, one organism is ___________ and one organism is benefiting. 

• helped
• harmed
• not effected
• happy

Commensalism is where one organism is benefiting and the other organism is _____________________. 

• not effected
• helped
• harmed
• hurt

Tags

NGSS.MS-LS2-2

A dog is harmed by a tick when it sucks the dog’s blood. The tick is benefiting because it is getting nutrients from the dog. This is an example of a ________________. 

• parasitic relationship 
• mutual relationship 
• commensal relationship 

Tags

NGSS.MS-LS2-2

Which is an example of commensalism?

• Two different kinds of organisms harming each other. 
• Two different kinds of organisms are neither helping nor harming each other. 
• One kind of organism is being helped, but the other one is not harmed or helped. 
• One kind of organism is being helped, but the other is harmed. 

Lichens are made of fungi and algae that benefit from growing together. Which of these best describes this relationship?

• parasitic 
• commensal 
• competetive
• mutual 

Which interaction benefits both organisms?

• A flea living on a dog
• A bee pollinating a flower
• A tapeworm living inside an animal
• A mosquito biting a person

Tags

NGSS.MS-LS2-2

Bacteria live in the intestines of cows and other organisms. Bacteria help to digest food for the cow. The cow provides a warm, moist environment to live.

• Mutualism
• Commensalism
• Parasitism
• Predation

Bald eagles can spot fish swimming in a lake from high altitudes, swoop down, and grab fish to feed their young back in the nest.

• Mutualism
• Commensalism
• Parasitism
• Predation

A relationship between two organisms in which both organisms benefit. 

• Mutualism 
• Predation
• Parasitism 
• Commensalism