flow of energy

What is the primary source of energy for most ecosystems?

• Sunlight

• Wind energy

• Geothermal heat

• Nuclear power

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How do desert plants adapt to conserve water?

• Desert plants adapt by developing deep roots, thick cuticles, and using CAM photosynthesis.

• Desert plants have large leaves to capture rain.

• Desert plants rely on frequent rainfall.

• Desert plants grow in water-rich soil.

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NGSS.MS-LS2-1

Explain the concept of trophic levels in an ecosystem.

• Trophic levels are the different types of soil found in an ecosystem.

• Trophic levels refer to the physical layers of an ecosystem.

• Trophic levels are the different stages in an ecosystem that categorize organisms based on their feeding relationships and energy flow.

• Trophic levels describe the climate zones in an ecosystem.

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What is the 10% rule in energy transfer between trophic levels?

• The 10% rule applies only to plants and not to animals in the food chain.

• The 10% rule states that 50% of energy is transferred between trophic levels.

• The 10% rule indicates that energy is lost completely at each trophic level.

• The 10% rule states that approximately 10% of energy is transferred from one trophic level to the next.

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Describe the difference between a food chain and a food web.

• A food chain shows only herbivores, while a food web shows only carnivores.

• A food chain is a diagram, while a food web is a written description.

• A food chain is a linear sequence of energy flow, while a food web is a complex network of interconnected food chains.

• A food chain includes multiple species, while a food web only includes one species.

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What role do decomposers play in an ecosystem?

• Decomposers produce energy for plants.

• Decomposers are primary consumers in the food chain.

• Decomposers compete with plants for sunlight.

• Decomposers recycle nutrients and help maintain ecosystem balance.

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Identify a biome characterized by high rainfall and biodiversity.

• Desert

• Tropical rainforest

• Savanna

• Tundra

Why do leaves of plants on the Rainforest floor have wider leaves?

• To retain water

• To release poision

• To attract predators

• To have more access to light

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If there is 1000 Kcal available in the producers in trophic level 1, approximately how much energy is available in the herbivores in trophic level 2?

• 10 Kcal

• 1 Kcal

• 100 Kcal

• 1000 Kcal

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In a food chain, 100% of energy is passed from one link to the next.

• True

• False

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