Relationships in the Ecosystem

Which symbiotic relationship is when one organism benefits and the other is not impacted (positively or negatively)?

• Parasitism

• Commensalism

• Mutualism

• Predation

Relationship in which two species live closely together

• symbiosis

• succession

• mutualism

• resource

Check all that applies:

Which of the following are factors that could cause extinction?

• Increased human population (more people)

• Pollution

• Climate change

• Destruction of animals' habitat

Tags

NGSS.MS-ESS3-4

NGSS.MS-LS2-4

NGSS.MS-LS2-5

A bird hitches a free, safe ride on the back of a grey elephant. The elephant doesn't seem to mind and barely notices the bird. Which type of relationship is this?

• parasitism

• commensalism

• mutualism

Tags

NGSS.MS-LS2-2

A bird in a tree watched as a lion stalked, attacked, and then ate a zebra. Which of these animals was the prey?

• bird

• lion

• zebra

• all of the above

A pearlfish spends the day inside the intestines of a sea cucumber. The fish emerges from the sea cucumber at night to feed on small crustaceans. The sea cucumber is not harmed by this.

• Predation

  
  

• Parasitism

• Commensalism

• Mutualism

A boxer crab carries a pair of small anemones in its claws. When approached by a predator, the crab waves the stinging tentacles of the anemones to deter the predator. The anemones eat the small particles of food dropped by the crab when it is feeding.

• Predation

• Parasitism

• Commensalism

• Mutualism

Tags

NGSS.MS-LS2-3

Athlete’s foot is a fungus growing between and around human toes. The fungus gets nutrients from the human skin. Athlete’s foot causes dry, scaly skin, itching, inflammation and even blisters.

• Predation

• Parasitism

• Commensalism

• Mutualism

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.

• Predation

• Parasitism

• Commensalism

• Mutualism

Tags

NGSS.MS-LS2-3