Science Form 2 Chapter 2

What is a producer in an ecosystem?

• an organism that feeds on other organisms

• An organism that produces energy through photosynthesis

• An organism that decomposes dead matter

• An organism that feeds on both plants and animals

Which of the following is an example of a decomposer?

• Lion

• Grasshopper

• Mushroom

• Grass

What is the primary role of a consumer in an ecosystem?

• Produce energy through photosynthesis

• Decompose dead matter

• Feed on other organisms

• Fix nitrogen in the soil

Which of the following best describes a food chain?

• A network of interconnected food webs

• A linear sequence of organisms showing who eats whom

• A community of producers and consumers

• A system of energy flow within an ecosystem

How does a food web differ from a food chain?

• Food web shows only plants, while food chain shows animals.

• Food chain shows a linear sequence, while food web shows interconnectedness.

• Food web is simpler than a food chain.

• Food web shows only predators, while food chain shows prey.

Which cycle is responsible for the movement of water between the atmosphere, land, and oceans?

• Nitrogen cycle

• Carbon cycle

• Water cycle

• Oxygen cycle

What is the main source of carbon dioxide in the atmosphere?

• Respiration of animals

• Combustion of fossil fuels

• Photosynthesis in plants

• Volcanic eruptions

How can we save water in our daily lives?

• Leave taps running when not in use

• Take long showers daily

• Fix leaking taps and pipes promptly

• Use water for cleaning vehicles frequently

Which term refers to the place where an organism lives and obtains its food and shelter?

• Species

• Ecosystem

• Population

• Habitat

Which of the following is an example of a population?

• All the animals in a forest

• All the different species in a pond

• All the different habitats in a jungle

• All the lions in an African savanna