Interactions in the Ecosystem

Which of these is an example of one living thing depending on another living thing?

• Cat walking on the sand

• Bird building a nest in a tree

• Dog warming in the sunlight

• Squirrel drinking water

Tags

NGSS.MS-LS2-2

A tapeworm inside a dog is

• competition

• predation

• commensalism

• parasitism

A symbiotic relationship that involves species having to fight for something they both need or want

• competition

• predation

• commensalism

• parasitism

relationship in which two species live closely together

• resource

• mutualism

• succession

• symbiosis

symbiotic relationship in which one organisms benefits and the other organism is not affected

• invasive (non-native) species

• mutualism

• parasitism

• commensalism

Tags

NGSS.MS-LS2-2

symbiotic relationship in which both organisms benefit

• competition

• Mutualism

• nitrogen fixation

• energy pyramid

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-LS2-1

NGSS.MS-LS2-2

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

• Parasitism

• Commensalism

• Mutualism

• Predation

Tags

NGSS.MS-LS2-2

Relationship in which two species live closely together

• symbiosis

• succession

• mutualism

• resource

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