BIOTIC INTERACTIONS

Which example describes a mutualistic relationship between organisms?

• Young wasps prey on caterpillars.

• Crabs eat the remains of dead fish.

• Ants protect a tree on which they feed.

• Tapeworms feed on food in the intestines of cats.

Tags

NGSS.MS-LS2-2

Tadpoles grown in ponds with high densities of tadpoles have lower survival and growth rates than tadpoles grown in ponds with lower densities of tadpoles. Which interaction between tadpoles grown in high-tadpole-density ponds would most likely cause the decreased survival and growth rates?

• symbiosis

• mutualism

• competition

• commensalism

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

For the aye-aye species, what is most likely the primary value of individuals living alone?

• decreased space needs for the species

• increased survival rates with habitat loss

• reduced competition for natural resources

• greater genetic variability within the species

Orchids living in tropical rainforests often grow on the branches of trees to access sunlight. The trees are not affected by the orchids. Which term best classifies the relationship between the orchids and the trees?

• predation

• parasitism

• competition

• commensalism

Oak treehoppers are parasites of trees. Which statement describes the relationship between an oak treehopper and a tree?

• Both the oak treehopper and the tree are harmed by one another.

• The oak treehopper benefits from the tree, while the tree is unaffected.

• The tree benefits from the oak treehopper, while the oak treehopper is unaffected.

• The oak treehopper benefits from the tree, while the tree is harmed by the oak treehopper.

Tags

NGSS.MS-LS2-2

Which statement describes how the Yawunik most likely interacted with other organisms in its environment?

• It competed with producers for sunlight.

• It had a mutualistic relationship with phytoplankton.

• It lived symbiotically with most small aquatic organisms.

• It was a predator that obtained energy from other consumers.

Tags

NGSS.MS-LS2-2

A species of snapping turtles has a tongue that resembles a worm. The tongue is used to attract small fish. Which best describes the interaction between the fish and the snapping turtle?

• predation

• symbiosis

• parasitism

• competition

The oscellated frogfish is known for a specially adapted dorsal fin located just above the fish's mouth. The fin is stalk-like with a fleshy tip, and the frogfish can wiggle it to mimic the appearance and movement of small sea creatures. This behavior attracts other species of fish that prey on the creatures being mimicked. Which term best classifies the interaction between the frogfish and the other species of fish it attracts?

• symbiosis

• predation

• parasitism

• competition

Tags

NGSS.MS-LS2-2

A farmer plants two species of grass with similar nutrient needs on the same small plot of land. What kind of interaction will most likely occur between the two species?

• competition

• parasitism

• mutualism

• commensalism

Tags

NGSS.MS-LS2-2

Which action will most likely decrease a population of small fish in a pond?

• an increase in the population of its predators

• a decrease in competition for resources

• an increase in the population of its prey

• a change in the water temperature

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4