Page 1: Introduction

Life processes: essential activities to maintain life — nutrition, respiration, transportation, excretion.

All living organisms perform these for energy and growth.

Page 2: Nutrition

Process of obtaining food for energy and growth.

Autotrophic: make own food (photosynthesis).

Heterotrophic: depend on others (holozoic, saprophytic, parasitic).

Page 3: Photosynthesis

Site: chloroplast.

Raw materials: CO₂, H₂O.

By-products: O₂.

Page 4: Nutrition in Amoeba

Holozoic: pseudopodia → food vacuole → digestion → absorption → egestion.

Page 5: Human Digestive System

Mouth → oesophagus → stomach → small intestine → large intestine → anus.

Enzymes: salivary amylase, pepsin, trypsin, lipase.

Absorption in small intestine (villi).

Page 6: Respiration

Breakdown of glucose for energy.

Aerobic: with O₂ → CO₂ + H₂O + energy

Anaerobic: without O₂ → lactic acid/ethanol + less energy

Page 7: Human Respiratory System

Nostrils → nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → alveoli.

Breathing: inhalation (diaphragm down), exhalation (diaphragm up).

Page 8: Transportation in Humans

Blood: plasma, RBC, WBC, platelets.

Heart: 4 chambers, double circulation (pulmonary, systemic).

Blood vessels: arteries, veins, capillaries.

Page 9: Transportation in Plants

Xylem: water and minerals upward.

Phloem: food bidirectional (translocation).

Page 10: Excretion

Removal of wastes.

Humans: kidneys → nephron → urine.

Plants: excess O₂, gums, resins, waste in leaves.

Page 11: Key Processes Summary

• Nutrition: auto/hetero
• Respiration: aerobic/anaerobic
• Transportation: heart, blood, xylem/phloem
• Excretion: kidney, nephron

Page 12: Practice Questions - Easy (1-10)

1. Photosynthesis equation.
2. Site of photosynthesis.
3. Enzyme in saliva.
4. Alveoli function.
5. Double circulation meaning.
6. Nephron function.
7. Xylem transports?
8. Anaerobic in humans product.
9. Breathing controlled by?
10. Translocation meaning.

Page 13: Practice Questions - Medium (11-20)

11. Digestion of starch starts where?
12. Role of villi.
13. Path of air in respiratory system.
14. Blood flow in heart.
15. Excretion in plants examples.
16. Difference aerobic anaerobic respiration.
17. Human heart chambers.
18. Phloem function.
19. Kidney role in homeostasis.
20. Nutrition in amoeba steps.

Page 14: Practice Questions - Hard (21-30)

21. Explain human digestive system with enzymes.
22. Double circulation advantage.
23. Nephron working detailed.
24. Compare transportation plants and humans.
25. Respiration in humans step by step.
26. Board level diagram description.
27. Photosynthesis importance.
28. Anaerobic in yeast use.
29. Life processes interdependence.
30. Excretory system regulation.

Page 15: Diagrams Description

Human digestive, respiratory, heart, nephron.

Page 16: Common Mistakes

• Wrong enzyme location
• Confusing xylem/phloem
• Single circulation in humans
• Missing alveoli/villi
• Wrong anaerobic product

Page 17: Previous Year Questions

Digestive system, respiration, heart, nephron.

Page 18: Exam Tips

• Draw labelled diagrams
• Write equations balanced
• List steps clearly
• Explain functions
• Memorise enzymes and organs

Page 19: Quick Revision Sheet

All processes, organs, equations.

Page 20: Final Motivation

Chapter 6 complete! Life Processes is diagram-heavy and scoring.

Master diagrams and functions.

Class 10 Science unstoppable 🦖

Page 21: Extra Diagrams

Description of key figures.

Page 22: Enzymes Table

Digestive enzymes and action.

Page 23: Heart Blood Flow

Step-by-step.

Page 24: Nephron Function

Detailed.

Page 25: Photosynthesis Steps

Light and dark reaction hint.

Page 26: Respiration Types

Aerobic vs anaerobic comparison.