Q1
Organisms that make their own food are called:
Aautotrophs
Bheterotrophs
Cdecomposers only
Dparasites only
CBSEClass 10 (CBSE)ScienceCh 5 · Topic 1
Nutrition in Living Organisms
Learning about autotrophic and heterotrophic modes of nutrition.
Core concept
Photosynthesis occurs in chloroplasts using chlorophyll to capture light energy, converting carbon dioxide and water into glucose and oxygen (6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂). Heterotrophic nutrition in humans involves the digestive system breaking down complex food into simpler, absorbable molecules through mechanical and chemical digestion, with enzymes like amylase, pepsin, and lipase breaking down carbohydrates, proteins, and fats respectively at different stages of the digestive tract.
Exam highlight
Key diagram
Keywords worth remembering
Trending
nutrition in living organismscbse class 10
Most searched
CBSE class 10 nutrition in living organisms
Quick revision
Study resources
Notes & downloads
Quick notes
• Autotrophic nutrition: organisms make their own food (photosynthesis in plants).
• Heterotrophic nutrition: organisms depend on others for food (animals, fungi).
• Photosynthesis: 6CO₂+6H₂O → C₆H₁₂O₆+6O₂, using chlorophyll and sunlight.
• Human digestion: ingestion, digestion (mechanical/chemical), absorption, assimilation, egestion.