Buffyyour study buddyHi! Ask me about digestion, breathing, the heart, the kidneys, or the nervous system.
Buffy is an AI helper and can be wrong — always check your NCERT textbook.
Your body is a team of systems working every second — taking in food and air, pumping blood, clearing waste, moving and thinking. Tap each one to see its job.
Play with it
Your body runs several life processes at once. Tap each system to see what job it does and which organs carry it out.
Learn
Every living animal must carry out certain life processes to stay alive:
Digestion breaks food into simple substances; breathing brings in the oxygen used to release that food's energy inside the cells (respiration).
Worked example. Why must we breathe in oxygen?
Oxygen is used in respiration to release energy from digested food inside our cells. Without oxygen, the cells cannot get the energy they need to work.
Where you'll meet it
Sprint, and your muscles demand more oxygen and energy — so your heart races and you breathe faster to deliver them and clear the extra carbon dioxide.
Eating well, drinking water and clean air keep each system working — good food for digestion, water for the kidneys, fresh air for the lungs.
Check yourself
Modelled on the competency-based pattern — MCQ, assertion–reason and a case study, testing whether you can use the ideas, not just recall them.
Interactive built to the OpenMAIC approach (THU-MAIC, MIT). Content from the NCERT Class 7 Science textbook, Curiosity (ncert.nic.in).
Buffyyour study buddyBuffy is an AI helper and can be wrong — always check your NCERT textbook.