Symbiotic Relationships

Ostriches and gazelles eat together.  They both watch for predators and danger.  Since they see things differently, they each can identify threats the other animal may not see.  Both species are benefited.  

• mutualism
• commensalism
• predation
• parasitism

Tags

NGSS.MS-LS2-2

Mistletoe takes water and nutrients from the oak tree. This is good for the mistletoe but bad for the tree.

• mutualism
• commensalism
• parasitism
• competition

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

A bison walks through the grass, insects fly up and are seen and eaten by egrets.  This neither harms nor helps the bison, but it is easier for the egrets to get food.

• mutualism
• parasitsm
• commensalism
• competition

Tags

NGSS.MS-LS2-2

Hermit crabs live in shells that snails don't use anymore. The hermit crab gets a nice free home.  This neither harms nor helps the snails.

• mutualism
• commensalism
• parasitsm
• predation

Tags

NGSS.MS-LS2-2

In this food web, the snake and the mouse have this relationship

• mutualism
• commensalism
• predation
• parasitsm

Tags

NGSS.MS-LS2-4

Which symbols best describe mutualism?

• +,+
• +,-
• +,0
• -,0

Tags

NGSS.MS-LS2-2

Which symbols best describe parasitism?

• +,+
• +,-
• +,0
• -,0

Which symbols best describe commensalism?

• +,+
• +,-
• +,0
• 0,0

Tags

NGSS.MS-LS2-2

a relationship that occurs when two or more organims of the same species need the same resource at the same time

• competition
• symbiosis
• predation

A relationship between two species where one benefits while the other is harmed.

• Mutualism
• Commensalism
• Parasitism
• Naturalism