In a food chain, what is transferred from one organism to another?

A food chain consists of a seagull eating a dead swordfish that had eaten a bluefish. The bluefish had eaten shrimp that had eaten photosynthetic algae.

Which organism can be classified as a scavenger in the food chain?

Which food chain accurately shows the flow of energy in a field ecosystem?

Examine the food web of an area.

Examine the food chain.

Which organism has the most energy available for use?

Examine the food chain.

An organism that feeds on oak trees migrates into the ecosystem.

Which consequence is likely to occur first?

Examine the grassland food web.

A herd of zebra enter the grassland ecosystem. Zebra feed solely on grasses and are eaten by leopards.

What effect will the introduction of the zebra have on the grassland ecosystem?

Examine the graph.

What is represented by the dashed line on the graph?

Use the marine food web to answer the question.

What would be the most likely effect on the food web if the fish population suddenly decreased significantly?

A pine forest has enough food to support one thousand woodpeckers. Which factor could limit the growth of the woodpecker population?

Braconid wasps lay eggs on the tomato hornworm caterpillar's body. The larvae that hatch from the eggs start feeding on the tissue of the caterpillar. What type of ecological relationship do both the organisms share?

Cuckoo birds lay their eggs in a crow's nest and displace the eggs laid by the crow. The crows raise the chicks, thinking of them as their own. What are the consequences of this biological relationship?

Which example correctly identifies organisms that display a mutualistic relationship?

Which organism should be added to a food chain if a student is asked to give an example of a mutualistic relationship with plants?

The American alligator and the freshwater crocodile are similar species that feed on fish, amphibians, mammals, and birds. The alligator is found in America whereas the freshwater crocodile is found in Australia.

Which statement describes the most likely  interaction between these two species if they were suddenly living in the same ecosystem?

Which statement is an example of mutualism?

The graph shows the population of wolves and hare in a grassland.

In which year were the habitat of both the wolf and hare most likely destroyed by a fire?

The list shows symbols that a student used to show the relationship between different organisms.

Clownfish live among the deadly tentacles of sea anemone, which kills most other fish. The clownfish receives protection and also feeds on the food remains left by the sea anemone. Which symbols represent the relationship shared by the sea anemone and the clownfish?

The list shows symbols that a student used to show the relationship between different organisms.

The shrimp makes a burrow in the sand that both the shrimp and goby fish share. The shrimp has poor eyesight, but if it sees a goby fish suddenly swimming into the burrow, it also follows. Which symbols represent the relationship shared by the goby fish and the shrimp?

What is one biotic component of a wetland biome?

A terrestrial biome has long, cold winters and short, cool summers. The precipitation is low, and the ground remains frozen for most of the year. Plants such as lichens and mosses that can withstand dry and cold conditions are found in this biome. 

Which biome is characterized by these factors?

The Arctic fox is a small fox that inhabits the Arctic tundra. It depends on animals like lemmings, voles, fish, waterfowl, and seabirds for its survival.

How do these animals help the Arctic fox survive?

What abiotic factors can be found in a desert biome?

Which plant and animal species are characteristic of the Sahara Desert in Africa?

Which situation shows an interaction between abiotic and biotic factors?

The image shows an ecosystem.

Which letter represents an abiotic factor?

Which table correctly identifies the biotic and abiotic factors in a grassland ecosystem?

A student writes a summary about the abiotic and biotic factors of the tropical rainforest biome.

Which statement in the student’s summary is inaccurate?

The image shows the various types of needle-shaped leaves from different trees found in coniferous forests.

Which environmental condition has led to the development of needle-shaped leaves?

A student reads a passage about mangrove forests.

The student was asked to include an additional statement about a biotic factor that is found in mangrove forests. Which statement would be correct for the student to include?

The chart lists the characteristics of a type of animal adapted to live in a certain biome.

What are the likely environmental conditions of the biome that support the type of animal with the listed characteristics?

The eastern United States is part of the temperate forest biome. The biome is characterized by a mixture of deciduous and coniferous forests.

Which table lists the abiotic and biotic elements that can be found in a temperate forest?