Symbiotic Relationships

Which best describes mutualism?

• Both organisms benefit

• Both organisms are harmed

• One organism benefits. One organism is harmed.

• One organism benefits. One organism is not affected.

A tick suck the blood from the back of a dog. The tick and a dog have this type of relationship.

• mutualism

• commensalism

• neutralism

• parasitism

Cattle egrets are birds that forage in fields among cattle. The egrets get easy access to food and the cattle don't care if they are there or not.

• mutualism
• commensalism
• competition
• parasitism

Tags

NGSS.MS-LS2-2

Red-billed oxpeckers are birds that feed on parasites found on an impala. The impala gets rid of parasites and the red-billed oxpeckers get a yummy dinner. This is an example of _______.

• commensalism
• mutualism
• neutralism
• competition

Tags

NGSS.MS-LS2-2

A relationship between two organisms in which one organism benefits and the other is unharmed.

• Mutualism

• Competition

• Parasitsm

• Commensalism

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

• Mutualsim 
• Parasitism 
• Commensalism 

Tags

NGSS.MS-LS2-2

Mistletoe extracts water and nutrients from the spruce tree to the tree's detriment (harm). 

• Mutualsim 
• Parasitism 
• Commensalism 

Tags

NGSS.MS-LS2-4

Two organisms that are so similar they can interbreed in nature and produce fertile offspring.

• biotic factor

• herbivore

• ecosystem

• species

A cuckoo and a warbler are both birds. A cuckoo will find the nest of warbler instead of building her own, and she harms the warbler by knocking a warbler egg out of nest and laying her own. When the warbler mother returns, she isn’t aware of the switch. The warbler will then raise the baby cuckoo bird instead of her own baby. Which term best describes this relationship?

• Predation

• Parasitism

• Commensalism

• Mutualism

Ostriches and gazelles are two animals that live in Africa. They graze for food near each other because they help each other spot predators. The gazelle has excellent eyesight, but poor hearing, and the ostrich has excellent hearing, but poor eyesight. These two animals will alert one another when danger is near. Which term best describes this relationship?

• Predation

• Commensalism

• Mutualism

• Parasitism

Tags

NGSS.MS-LS2-2