Ecological Relationships Practice

Which of the following explains how energy is transferred through this food web?

• all the energy from the grasshopper goes to the frog

• all the energy from the wolf goes to the python

• the energy from the fruit fly is split evenly between the frog, dragonfly, and thrush

• some of the energy from the corn goes to the grasshopper

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Aphids are small insects that live on various types of plants and feed on their sap. When there is a large population of aphids on a plant it can wilt. Ladybugs eat aphids and are often used in greenhouses to control aphid populations. Which type of relationships are demonstrated here?

• the relationship between the ladybugs and the aphids is competition and the relationship between the plants and ladybugs is predation

• the relationship between the ladybugs and aphids is predation and the relationship between the aphids and plants is parasitism

• the relationship between the ladybugs and aphids is parasitism and the relationship between the ladybugs and plants is mutualism

• the relationship between the ladybugs and aphids is commensalism and between the ladybugs and plants is predation

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Gopher tortoises dig their homes called burrows. These burrows are sometimes used by other animals including some snakes as protection against weather or wildfires.

Which of the following relationships is the same type of symbiotic relationship?

• a pseudoscorpion hitching a ride on a larger insect to move to a new location

• tapeworms live in the digestive system of mammals and will eventually cause illness in the host

• goby fish and blind shrimp are roommates in a burrow, when a predator is close the goby fish will tap the shrimp to warn it

• moths lay eggs in the seedpods of yucca plant, the larvae hatch and eat some of the seeds, while the adult moths act as pollinators

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Gopher tortoises dig their homes called burrows. These burrows are sometimes used by other animals including some snakes as protection against weather or wildfires.

Which type of symbiotic relationship is this?

• commensalism

• mutualism

• predation

• competition

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Which describes the role of a decomposer?

• control the population by removing energy from the organisms

• obtain energy and transfer energy by feed on other organisms

• light, oxygen, carbon dioxide and water are converted into energy

• return nutrients back into the soil, air and water to provide energy to plants

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The Florida Panther is an endangered species. Which is most likely causing their population to decline?

• competition for territory between panthers

• weakening of species due to inbreeding

• the loss of natural habitat due to humans

• increase in population of their prey

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What happens when there is a decrease in the availability of food for a population?

• an extinct population remains extinct

• the population has fewer individuals than before

• the population has the same amount of offspring as past years

• the population has more adults than previous years

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Which of the following defines mutualism?

• a relationship between a two individuals in which both benefit

• a relationship between two individuals in which one benefits and one is harmed (host)

• a relationship between two individuals in which one eats the other

• a relationship between two individuals in which they fight over some resource

• a relationship between two individuals in where one benefits and the other is unaffected

Which of the following defines commensalism?

• a relationship between a two individuals in which both benefit

• a relationship between two individuals in which one benefits and one is harmed (host)

• a relationship between two individuals in which one eats the other

• a relationship between two individuals in which they fight over some resource

• a relationship between two individuals in where one benefits and the other is unaffected

Which of the following defines commensalism?

• a relationship between a two individuals in which both benefit

• a relationship between two individuals in which one benefits and one is harmed (host)

• a relationship between two individuals in which one eats the other

• a relationship between two individuals in which they fight over some resource

• a relationship between two individuals in where one benefits and the other is unaffected

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