Q1
What is excretion?
ARemoving metabolic waste products
BObtaining food
CReleasing energy
DGrowing bigger
SSCClass 10 (SSC)Science and Technology (विज्ञान आणि तंत्रज्ञान)Ch 13 · Topic 2
Practice and Revision - Life Processes in Living Organisms - Part 2
Let us practise and revise what we learned about life processes in living organisms - part 2. Continuing life processes, excretion and contr
Core concept
Excretion removes metabolic waste products from the body, with the kidneys being the primary excretory organs in humans, filtering blood to form urine.
How it works
The nervous system, using neurons, allows rapid coordination and response to stimuli, controlling voluntary and involuntary actions.
Why it matters
The endocrine system, using hormones, provides slower but longer-lasting coordination, regulating growth, metabolism, and other body functions.
Key detail
These systems work together, ensuring organisms can maintain internal balance (homeostasis) while responding appropriately to their environment.
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Quick notes
• Excretion: removes metabolic waste.
• Kidneys: primary human excretory organs.
• They filter blood, form urine.
• Nervous system: neurons for rapid response.
• Controls voluntary, involuntary actions.
• Endocrine system: hormones for slower coordination.
• Regulates growth, metabolism.
• Systems maintain homeostasis, environmental response.