Roles of animals/plants

Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

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Which animal is not the apex predator but, a predator to a mouse?

• hawk
• rabbit
• snake
• grass

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The arrows in a food chain or web represents what?

• They point to the organism that is being eaten.
• It shows how sunlight flows within an ecosystem.
• They show what direction the energy is flowing between organisms. 
• They represent how water is transferred within a habitat.

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Organisms that create their own energy from sunlight or chemicals

• Herbivore

• Omnivore

• Producer

• Decomposer

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An organism that obtains energy by consuming plants and animals.

• Omnivores
• Carnivores
• Herbivores
• Humans 

It might not always be shown, but in a food chain, the beginning of the energy always starts with -

• a consumer
• the grass
• the sun
• an herbivore

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What is a keystone species?

• A species that helps to hold an ecosystem together

• A species that lives in or around rocks

• Keys and stones have nothing to do with ecology

• A keystone isn't a living thing, it's just a stone

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The term biodiversity means:

• a wide variety of plants and animals in an ecosystem
• only a few types of plants and animals in an ecosystem
• an ecosystem composed mostly of plants
• an ecosystem composed mostly of animals

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A keystone species affects

• Animal populations only

• Climate

• The environment

• Achitecture

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____________________ is the process by which light energy from the sun is converted to food.

• osmosis

• inertia

• photosynthesis

• decomposition

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