Which of the following best describes mutualism?

   

• One species benefits, while the other is harmed. 

• Both species benefit from the interaction. 

• One species benefits, while the other is unaffected.

• Both species are harmed by the interaction. 

Plants, animals, and human beings are the living components in an ecosystem. Which of these describes them?

• abiotic
• biotic
• producer
• organism

What are the producers in the ecosystem?

• people
• animals
• plants
• soil

Why does the food chain start with a plant?

• Many animals eat plants.
• There are more plants than animals.
• Plants are food makers.
• Plants need food to survive.

Which word refers to the transfer of food from plants to a series of consumers?

• food web
• food chain
• food series
• food pyramid

Why people and animals are called consumers?

• They eat plants only.
• They depend on plants and other animals for food.
• They produce their own food.
• They supply carbon dioxide and oxygen.

What is the role of a producer in a food chain?

• Eats decaying animals
• Preys on animals
• Feeds on plants
• Makes food

What do you call the struggle among organisms to survive in a habitat with limited resources such as food and space?

• competition
• predation
• parasitism
• mutualism

Why do plants and animals help each other or even compete against each other?

• Because they need each other
• Because they want to get the attention of each other
• Because they want to survive in the place they live in
• Because they want to increase the population of their own species

Study the picture below and reflect on the scenario. If a large number of people were to move and settle in this area, what changes are likely to occur in the next 20 years?

• More trees will be growing
• Less crops will be produce
• There will still enough clean air
• Water supply will not be a problem