Ecosystem Quiz

Which option correctly shows the hierarchy of an ecosystem from the lowest level to highest level?

• Organisms, populations, communities, ecosystem

• Ecosystem, communities, populations, organisms

• Ecosystem, populations, organisms, communities

• Organisms, communities, populations, ecosystem

Which best describes how ecosystems are broken down?

• Ecosystems are broken down into communities made of organisms, which are made of populations that live in the same area.

• Ecosystems are broken down into communities made of populations, which are made of organisms that live in the same area.

• Populations are made of communities of the same species that live in the same area.

• Ecosystems are made of communities that live in the same area.

Which is NOT a population in the ecosystem shown below?

• Two or more fish

• A group of seahorses

• A single fish

• A group of seahorses and their young

All the white-tailed deer in the Texas Hill Country make up a ________, while all the plants and animals in the Texas Hill Country make up a ________. Which terms, in order, best complete the sentence?

• community; population

• ecosystem; community

• population; ecosystem

• population; community

An ecologist keeps a notebook of observations on the African savanna. What is the primary focus of her observations?

• Animal behavior

• Plant growth

• Weather patterns

• Soil composition

Which of her observations describe organisms interacting with biotic factors of the environment?

• 1, 2, 3

• 1, 4, 6

• 2, 4, 5

• 3, 5, 6

Choose the option that best differentiates between ecosystems, populations, and communities.

• In an ecosystem, bears of different species make up a population while bears, penguins, and seals make up an ecosystem.

• Seals make up a population, bears and seals are part of a community, and the ecosystem consists of all biotic and abiotic factors.

• Penguins and bears make up a population, seals make up a community, and all organisms make up an ecosystem.

• An ecosystem consists of communities and abiotic factors, communities consist of only abiotic factors, and populations consist of only biotic factors.

A certain plant needs light, carbon dioxide, oxygen, water, and minerals to survive. What are these factors classified as?

• Biotic factors

• Abiotic and biotic factors

• Abiotic factors

• None of the above

Which of the following describes an interaction between plants and only abiotic factors in an ecosystem?

• Bacteria in the roots converts nitrogen into a usable form for the plants

• nutrients from decomposing leaves are absorbed by the roots of the plants

• Rainwater from clouds that is absorbed into soil enters the roots of plants

• Taller plants blocking the sunlight from reaching the leaves of short plants

What are some relationships between abiotic and biotic factors you can observe on an ecosystem?

• Biotic factors rely on abiotic factors for water, shelter and light

• there is no relationship between an abiotic and biotic factor

• abiotic factors rely on biotic factors to exist

• biotic factors only rely on other biotic factors to survive in an ecosystem