Food Chains, Food Webs, and Energy Pyramids

All food webs and food chains begin with _________________.

• primary consumer
• producers
• secondary consumers
• predators

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Which organism recieves the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse

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Organisms which carry out the process of decomposition by breaking down dead or decaying organisms.

• Consumer
• Producer
• Decomposer
• Herbivore

How do producers obtain energy?

• They conduct photosynthesis.
• They consume plants.
• They consume primary consumers.
• They consume secondary consumers.

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Type of model to show the amount of energy available for each step (or trophic level) of a food chain.

• Food chain

• Food web

• Food pyramid

• Food

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Abiotic factors are __________________.

• Living

• Running

• Non-living

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Biotic factors are ___________________.

• Living

• Running

• Non-living

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Which of these organisms would receive energy from the snake?

• Plant
• Rabbit
• Mouse
• Hawk

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The roadrunner is a desert bird that eats fruits and seeds. It also eats insects, spiders, scorpions, and rattlesnakes.

What would likely happen if the roadrunner population disappeared from its ecosystem?

• There would be no more fruits or seeds.

• There would a decrease in spider populations.

• The rattlesnake population would stay the same.

• There would be an increase in scorpion populations.

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What is a food web?

• a web created by a spider to trap its food
• a network of food chains in an ecosystem
• a community of plants and animals
• the food that one animal eats

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