CLASS 10 SCIENCE — LIFE PROCESSES
Chapter 6 | NCERT | Complete Notes
LIFE PROCESSES
Chapter 6 | Class 10 Science
NCERT-Based Handmade Notes
TOPICS COVERED
1. What are Life Processes?
2. Nutrition (Autotrophic & Heterotrophic)
3. Photosynthesis (Reaction + Diagram)
4. Nutrition in Human Beings (Alimentary Canal)
5. Respiration (Aerobic & Anaerobic)
6. Transportation in Plants & Human Beings
7. Excretion in Plants & Human Beings
8. Important Diagrams & Flowcharts
9. Key Terms & One-Liners for Exam
★ EXAM TIP: This chapter carries ~10–13 marks in CBSE Board Exam.
Focus on diagrams, equations, and differences tables.
—1—
, Life Processes — Introduction & Nutrition
Pg. 2
1. WHAT ARE LIFE PROCESSES?
All living organisms perform certain basic functions essential for survival.
Definition:
Maintenance processes performed by living organisms for
their survival are called Life Processes.
Main Life Processes:
Nutrition Respiration Transportation Excretion
2. NUTRITION
AUTOTROPHIC HETEROTROPHIC
Plants, Algae Animals, Fungi
Some Bacteria Most Bacteria
Use sunlight/chemicals Depend on others
Make own food Holozoic, Saprotrophic
Examples: Photosynthesis Parasitic mode also
2A. PHOTOSYNTHESIS
Process by which green plants prepare food using sunlight, CO2, and water.
Equation:
6CO2 + 6H2O ■■Sunlight/Chlorophyll■■■ C6H12O6 + 6O2
Conditions Required:
Sunlight Chlorophyll CO2 Water
Two Stages:
Light Reaction (in Thylakoid) → Splits water, releases O2, produces ATP
Dark Reaction / Calvin Cycle (in Stroma) → Uses CO2, produces glucose
★ Stomata — pores on leaves that allow CO2 in and O2 out. Guard cells control opening/closing.
—2—
Chapter 6 | NCERT | Complete Notes
LIFE PROCESSES
Chapter 6 | Class 10 Science
NCERT-Based Handmade Notes
TOPICS COVERED
1. What are Life Processes?
2. Nutrition (Autotrophic & Heterotrophic)
3. Photosynthesis (Reaction + Diagram)
4. Nutrition in Human Beings (Alimentary Canal)
5. Respiration (Aerobic & Anaerobic)
6. Transportation in Plants & Human Beings
7. Excretion in Plants & Human Beings
8. Important Diagrams & Flowcharts
9. Key Terms & One-Liners for Exam
★ EXAM TIP: This chapter carries ~10–13 marks in CBSE Board Exam.
Focus on diagrams, equations, and differences tables.
—1—
, Life Processes — Introduction & Nutrition
Pg. 2
1. WHAT ARE LIFE PROCESSES?
All living organisms perform certain basic functions essential for survival.
Definition:
Maintenance processes performed by living organisms for
their survival are called Life Processes.
Main Life Processes:
Nutrition Respiration Transportation Excretion
2. NUTRITION
AUTOTROPHIC HETEROTROPHIC
Plants, Algae Animals, Fungi
Some Bacteria Most Bacteria
Use sunlight/chemicals Depend on others
Make own food Holozoic, Saprotrophic
Examples: Photosynthesis Parasitic mode also
2A. PHOTOSYNTHESIS
Process by which green plants prepare food using sunlight, CO2, and water.
Equation:
6CO2 + 6H2O ■■Sunlight/Chlorophyll■■■ C6H12O6 + 6O2
Conditions Required:
Sunlight Chlorophyll CO2 Water
Two Stages:
Light Reaction (in Thylakoid) → Splits water, releases O2, produces ATP
Dark Reaction / Calvin Cycle (in Stroma) → Uses CO2, produces glucose
★ Stomata — pores on leaves that allow CO2 in and O2 out. Guard cells control opening/closing.
—2—
