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Plants and Animals Regulation and Response Vocab

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Question
Answer
What is the largest organ in your body?   Skin  
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What system provides the first line of defense against infection?   Integumentary  
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What is a tropism?   A plant's response to a stimulus.  
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What is a stimulus?   Something that evokes a specific reaction.  
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What is your endocrine system?   A collection of glands that produce hormones.  
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What is a hormone?   A chemical signal created in one area of the body that evokes a reaction in another area of the body.  
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What do enzymes such as the ones found in your saliva do?   Accelerates chemical reactions.  
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What is thigmotropism?   Plant's growing or bending in response to touch.  
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What is phototropism?   Plant's growing or bending towards light.  
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What is geotropism?   The response of a plant to gravity in which the roots grow towards the center of earth and the shoots grow towards the sky.  
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What are feedback mechanisms?   Process that uses conditions of one component to regulate the function of another.  
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What is hydrotropism?   Plant's root growth towards water.  
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What type of signals are transmitted through the nervous system?   Electrical signals.  
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