Understanding Living Things

What is a heterotroph?

• A heterotroph is a type of plant that grows in water.

• A heterotroph is an organism that produces its own food through photosynthesis.

• A heterotroph is an organism that obtains food by consuming other organisms.

• A heterotroph is an organism that only consumes inorganic materials.

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What role do producers play in an ecosystem?

• Producers rely on other organisms for their energy needs.

• Producers are primarily responsible for decomposing organic matter.

• Producers are essential for converting solar energy into chemical energy.

• Producers are the top predators in an ecosystem.

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Explain the function of consumers in food chains.

• Consumers decompose organic matter in food chains.

• Consumers are only herbivores in food chains.

• Consumers produce energy for the ecosystem.

• Consumers are organisms that obtain energy by eating producers and other consumers, facilitating energy transfer in food chains.

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How do ectotherms regulate their body temperature?

• Ectotherms use fur and feathers to insulate their bodies from temperature changes.

• Ectotherms maintain a constant internal temperature regardless of the environment.

• Ectotherms regulate their body temperature behaviorally and through environmental interactions.

• Ectotherms rely solely on metabolic heat production to regulate temperature.

What are endotherms and how do they maintain warmth?

• Endotherms are warm-blooded animals that maintain warmth through internal metabolic processes and behavioral adaptations.

• Endotherms maintain warmth by hibernating during cold weather.

• Endotherms are cold-blooded animals that rely solely on external heat sources.

• Endotherms are animals that do not regulate their body temperature at all.

What gas do plants take in during photosynthesis?

• Oxygen

• Nitrogen

• Hydrogen

• Carbon dioxide

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What gas do animals exhale that is used by plants?

• oxygen

• hydrogen

• nitrogen

• carbon dioxide

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Why is water important for transporting nutrients?

• Water has no role in nutrient absorption.

• Water is only needed for hydration.

• Water is essential for dissolving and transporting nutrients throughout the body.

• Nutrients are transported through fat, not water.

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What role does water play in removing waste from cells?

• Water acts as a barrier preventing waste from leaving cells.

• Water helps remove waste from cells by dissolving waste products and aiding in their transport out of the body.

• Water is responsible for storing nutrients within cells.

• Water is primarily used for energy production in cells.

What are the differences between autotrophs and heterotrophs?

• Autotrophs are animals; heterotrophs are plants.

• Autotrophs consume other organisms; heterotrophs produce their own food.

• Autotrophs rely on sunlight; heterotrophs rely on water.

• Autotrophs produce their own food; heterotrophs consume other organisms.