Symbiotic Relationships

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

• parasitism
• commensalism
• mutualism

Tags

NGSS.MS-LS2-2

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

Tags

NGSS.MS-LS2-2

Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 

• parasitism
• commensalism
• mutualism

Tags

NGSS.MS-LS2-4

 The stork uses it saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to some bees for food and egg laying. The relationship neither harms nor benefits the stork.

• parasitism
• commensalism
• mutualism

Tags

NGSS.MS-LS2-2

Two male Giraffes are fighting over the last green leaf of a tree that is dying.  

• Competition
• Mutualsim
• Predation
• Commensalism

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

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

• helped
• harmed
• not effected
• happy

Tags

NGSS.MS-LS2-2

In a mutual relationship, both organisms are ________________. 

• hurt
• not effected
• harmed
• benefiting 

Tags

NGSS.MS-LS2-2

A tick is a parasite to a horse. Which statement best describes the relationship between the tick and the horse? 

• a.  The tick helps the horse get food. 
• a.  The tick harms the horse by feeding on its blood. 
• a.  The horse harms the tick by feeding on its blood. 
• The tick does not affect the horse. 

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. 

What is competition?

• Two organisms compete over limited resources
• One organism competes over limited resources
• Two organisms share limited resources
• A basketball game

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4