Relationships among Organisms

The relationship between two members of a community in which one member harms another by its presence is

• parasitism

• mutualism

• commensailism

• dependency

A bee goes from flower to flower, gathering nectar. At each stop, the furry body and legs accumulate pollen from the flower, which the bee transfers as it moves. The flower needs pollen to reproduce and the bee needs nectar to eat. What kind of relationship is this?

• parasitism

• commensalism

• mutualism

• predation

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Tapeworms are long, flat parasites that can live in the intestines of animals, including humans. The tapeworm feeds off the food the host animal consumes, and the host animal loses nutrition as a result. What kind of relationship is this?

• parasitism

• commensalism

• mutualism

• predation

Tags

NGSS.MS-LS2-2

A mother cuckoo lays her egg in the nest of a warbler, then flies away. The warbler raises the baby cuckoo along with her own babies. The cuckoo baby grows quickly, becoming massive compare to the warbler babies. At some point, the baby cuckoo pushes the warbler babies out of the nest in order to make more room for itself. What does this scenario describe?

• parasitism

• predation

• intraspecies competition

• interspecies competition

Which of the following is NOT true regarding predation?

• Predation helps maintain an ecological balance

• Predators keep the numbers of prey animals under control

• Predators choose the sick and weak prey because they are easier to catch

• Predators choose the sick and weak prey because they are trying to maintain ecological balance

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NGSS.MS-LS2-2

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Some small fish attach themselves to the body of a shark without harming it and feed upon its left over food. This relationship between the shark and the fish is an example of

• commensalism

• mutualism

• competition

• parasitism

The graph shows the changes in two populations of herbivores in grassy field. A possible reason for these changes is that

• all of the plant populations in this habitat decreased

• population B competed more successfully for food than population A did

• population A produced more offspring than population B did

• population A consumed the members of population B

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Which example shows a relationship between a living things and a nonliving thing?

• An insect is food for a salmon

• Water carries a rock downstream

• A tree removes a gas from the air

• A flower makes food for a butterfly

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NGSS.MS-LS2-3

A symbiotic relationship means

• the energy cycle is not involved

• no one benefits

• the solar system is involved

• one or both parties benefit

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NGSS.MS-LS2-2

Rabbits introduced into Australia over 100 years ago have become a serious pest to farmers. Rabbit populations increased so much that they displaced many native species of plant eaters. What is the MOST logical explanation for their increased numbers?

• Rabbits have a high death rate

• There are few effective predators

• Additional rabbit species have been introduced

• There is an increase in rabbit competitors

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