The Living Systems Unit Quiz

What is natural selection?

• The process by which organisms intentionally change their traits

• The process by which organisms better adapted to their environment tend to survive and produce more offspring.

• The process by which organisms randomly mutate

• The process by which organisms adapt to their environment through learning

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What is the basic unit of ecological organization?

• atom

• ecosystem

• galaxy

• molecule

What is the difference between food chains and food webs?

• Food webs are only found in aquatic ecosystems

• Food chains are more complex than food webs

• Food chains and food webs are the same thing

• Food chains are linear sequences of organisms, while food webs consist of interconnected food chains.

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What is a biome?

• A small area of similar plant and animal groups

• A specific type of rock formation

• A large geographical area of distinctive plant and animal groups

• A type of weather pattern

What are the main causes of loss of biodiversity?

• Global warming

• Habitat destruction, pollution, overexploitation of natural resources, climate change, and invasive species

• Alien abductions

• Excessive use of sunscreen

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Imagine Benjamin, Anika, and William are on a thrilling adventure in a dense forest. They stumble upon a mysterious process where dead organisms and waste materials are being broken down. Can you guess who might be responsible for this in an ecosystem?

• They are decomposers, breaking down dead organisms and waste materials, recycling nutrients back into the ecosystem.

• They are consumers, consuming other organisms for energy.

• They are producers, producing their own food through photosynthesis.

• They are climate regulators, controlling the climate of the ecosystem.

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What is the difference between endangered and extinct species?

• Endangered species are extinct, while extinct species are endangered.

• Endangered species are at risk of extinction, while extinct species have no living members left.

• Endangered species are found only in zoos, while extinct species are found only in the wild.

• There is no difference; both terms mean the same thing.

What is the impact of deforestation on biodiversity?

• Deforestation has no impact on biodiversity.

• Deforestation increases biodiversity by creating new habitats.

• Deforestation decreases biodiversity by destroying habitats.

• Deforestation affects biodiversity, but it is not clear whether the impact is positive or negative.

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What is the role of producers in an ecosystem?

• They break down dead organisms and waste materials, recycling nutrients back into the ecosystem.

• They consume other organisms for energy.

• They produce their own food through photosynthesis.

• They regulate the climate of the ecosystem.

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What is the difference between a habitat and a niche?

• A habitat is where an organism lives, while a niche is the role an organism plays in its environment.

• A habitat is the role an organism plays in its environment, while a niche is where an organism lives.

• A habitat and a niche are the same thing.

• A habitat is a type of ecosystem, while a niche is a type of species.