energy flow in ecosystems

Which process do plants use to turn sunlight into food energy?

• photosynthesis

• cellular respiration

• transpiration

• evaporation

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Which organism is an example of a producer?

• moth

• mushroom

• rose bush

• cheetah

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In the food chain below, which is the producer?

grass --> mouse --> snake --> hawk

• grass

• mouse

• snake

• hawk

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What is this an example of?

• Food chain

• Food web

• Energy pyramid

• Energy web

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What is the original source of energy for organisms in a food chain. 

• plants
• animals
• sunlight
• consumers

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What part of a plant is responsible for capturing sunlight?

• stem
• leaves
• roots
• flower petals

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Which is the best definition of a food chain?

• a model of consumers providing energy to producers
• a method for growing plants without soil
• a process by which plants make food from energy in sunlight
• a path by which energy flow from one living thing to another

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What is an ecosystem?

• all living and nonliving things that interact in an area
• all of the physical characteristics of an area
• all the living things that interact in an area
• all of the nonliving things that interact in an area

A food web from a forest ecosystem is shown. Which of the following organisms would have the greatest impact on the food web if it were removed? 

• oak tree
• hawk
• chipmunk 
• rabbit

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Food provides animals with the materials and energy they need for growth, warmth, and motion. Plants get material for growth mostly from air and water, and obtain energy from sunlight. 
Producers provide food to consumers because- 

• plants are more abundant in ecosystems
• animals cannot produce their own food
• plants can easily make food from soil and water
• many animals prefer eating plants to eating meat

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