Quizizz Unit 4 Lesson 1 Science Test Practice

An ecosystem is made of both biotic and abiotic things. Which describes the biotic part of the ecosystem?

• The soil that plants grow in

• The oxygen that animals breathe

• All living things in the environment

If you stand in the middle of an open field, you are standing among individual organisms, different species, populations and communities. What makes up one of the populations of the field?

• All organisms of the same species

• The different communities in the ecosystem

• The communities that occupy the same niche

The rainforests in South America support many ecosystems. These ecosystems are healthy. How does the diversity in the rainforest help determine the health of ecosystems?

• When diversity is high, there are more resources available and there is a greater variety of species

• Resources in the environment last longer when diversity is low

• Less diverse ecosystems have less competition among the organisms that live there

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Temperature, water, soil and air are abiotic factors in an environment. They are not the same everywhere. What role do abiotic factors such as these play in an ecosystem? (Why are they important?)

• They prevent (stop) competition among populations

• They determine which plants and animals can live there

• They help control the effect humans might have on the ecosystem

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When visiting the Everglades, a student noticed that there were many different kinds of living things. She saw snails, raccoons, crawfish, and even different plants! She was so amazed at all of the wildlife. What should she call this group of living things?

• Organism

• Population

• Community

A dog walker is responsible for walking a group of pugs each morning. What would a scientist call this group of pugs?

• Population

• Community

• Ecosystem