Ecosystems and Communities

A __________ includes all living and non-living things in an environment. 

• population
• niche
• abitotic
• ecosystem

Tags

CCSS.RI.11-12.5

CCSS.RI.6.5

CCSS.RI.7.5

CCSS.RI.8.5

CCSS.RI.9-10.5

Several species of warblers can live in the same spruce tree ONLY because they

• have different habitats within the tree.

• eat different foods within the tree.

• occupy different niches within the tree.

• can find different temperatures within the tree.

The symbiotic relationship between a flower and the insect that feeds on its nectar is an example of

• mutualism because the flower provides the insect with food and the insect pollinates the flower.

• parasitism because the insect lives off the nectar from the flower.

• commensalism because the insect doesn't harm the flower, and the flower doesn't benefit from the relationship.

• predation because the insect feeds on the flower.

Tags

NGSS.MS-LS2-2

What is one difference between primary and secondary succession?

• Primary succession is slow, and secondary succession is rapid.

• Secondary succession begins on soil, and primary succession begins on newly exposed surfaces.

• Primary succession modifies the environment, and secondary succession does not.

• Secondary succession begins with lichens, and primary succession begins with trees.

An owl and a hawk both eat mice. Which of these describes the relationship between a hawk and an owl?

• parasitism

• competition

• predation

• mutualism

In an ecosystem, you would expect to find interspecific competition between

• males and females of a species in which both sexes occupy the same niche.

• two wasp species that mimic each other's appearance.

• populations of two species that occupy the same niche.

• a prey species and its predator.

Tags

NGSS.MS-LS2-2

During ecological succession, the species composition of a plant community generally

• remains stable as long as major environmental factors (climate, human interference) remain constant.

• changes gradually because each species responds differently to the changing environment.

• changes from a diverse community in which many plants are common to one in which a few species are numerically dominant.

• changes until forest is established and a single species remains.

Tags

NGSS.HS-LS4-5

When a New England farm is abandoned, its formerly plowed fields first become weedy meadows, then shrubby areas, and finally forest. This sequence of plant communities is an example of

• secondary succession.

• evolution.

• primary succession

• a trophic chain.

Tags

NGSS.MS-LS2-4

Which of the following is NOT one of the five ways organisms interact in an ecosystem?

• predation
• commensalism
• mutualism
• reproduction

Tags

NGSS.MS-LS2-2

What do you call it when one species benefits while the other species is harmed?

• Predation
• Parasitism
• Commensalism
• Mutualism