Based on the analysis of the image and fundamental knowledge of human biology, here is the solution to the worksheet.
Part 1: Label the Picture
The diagram shows the main organs of the excretory system. The labels provided are "bladder" and "kidneys".
- The top box has arrows pointing to the two bean-shaped organs located in the upper part of the diagram. These are the
kidneys.
- The bottom box has an arrow pointing to the sac-like organ at the base of the diagram. This is the
bladder.
Therefore, the correct labeling is:
- Top Box:
kidneys
- Bottom Box:
bladder
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Part 2: True or False?
Let's evaluate each statement based on biological facts.
1.
The excretory system filters waste from blood.
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Answer: True
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Explanation: The primary function of the excretory system, specifically the kidneys, is to filter waste products, excess water, and other impurities from the bloodstream to form urine. This process is essential for maintaining homeostasis in the body.
2.
The bladder is part of the excretory system.
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Answer: True
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Explanation: The bladder is a crucial component of the excretory system. Its role is to store urine produced by the kidneys until it is expelled from the body through the urethra.
3.
Urine is stored in the kidneys.
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Answer: False
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Explanation: While urine is *produced* in the kidneys, it is not *stored* there. After being filtered, urine travels down the ureters to be temporarily stored in the bladder. The kidneys continuously produce urine, which then flows into the bladder for storage before elimination.
Parent Tip: Review the logic above to help your child master the concept of excretory system worksheet middle school.
