Life Processes · Class 10 Science · Chapter 5
🔬 Life Processes
CBSE Class 10 · Science · Chapter 5
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| 80% | Labelled heart diagram + explain double circulation — Diagram carries 3 marks — label vessels, not just chambers. Right = deoxygenated, Left = oxygenated. Blood crosses heart TWICE. | 5 MARKS |
| 70% | Human digestive system: diagram + role of each juice — Saliva→amylase, HCl→kills germs + activates pepsin, bile→emulsifies fat (NOT enzyme), pancreatic juice→trypsin/amylase/lipase. | 5 MARKS |
| 85% | Photosynthesis: equation + conditions + role of stomata — CO₂ in, O₂ out. Sunlight + chlorophyll above arrow. Stomata = gas-exchange pores guarded by guard cells. | 3 MARKS |
| 60% | Aerobic vs anaerobic respiration with equations — O₂ present vs absent; mitochondria vs cytoplasm; muscle→lactic acid, yeast→ethanol; aerobic gives MORE energy. | 3 MARKS |
| 55% | Nephron structure + how urine is formed — Filter at glomerulus → selective reabsorption → urine = leftover waste. Reabsorbed water amount depends on body need. | 5 MARKS |
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