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Class 10th bio notes, Schemes and Mind Maps of Biology

Biology

This mind map is very important

Typology: Schemes and Mind Maps

2025/2026

Available from 06/05/2026

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LIFE PROCESSES
Class 10 Biology — Visual Revision & Mind Map
CENTRAL CONCEPT
Life Processes: The basic essential maintenance functions performed by all living organisms to sustain life on
Earth, repair cellular structures, and counteract molecular breakdown.
1. NUTRITION 2. RESPIRATION 3. TRANSPORT 4. EXCRETION
Intake and utilization of Oxidative cellular Internal bulk distribution Isolation, processing, and
nutrients to generate breakdown of food system for water, vital absolute elimination of toxic
metabolic energy and build molecules (glucose) to minerals, manufactured nitrogenous metabolic waste
body tissues. synthesize dynamic food, and biological gases. materials.
chemical energy (ATP).
1. Nutrition
A. Autotrophic Nutrition (Self-Sustaining)
•Mechanism: Photosynthesis executed by green plants and specific cyanobacteria using environmental
inorganic raw materials.
•Balanced Equation: 6CO
₂
+ 12H
₂
O →(Sunlight / Chlorophyll) →C
₆
H
₁₂
O
₆
+ 6O
₂
+ 6H
₂
O
•Core Sequential Stages:
◦Absorption of radiant solar energy by light-harvesting chlorophyll molecules.
◦Conversion of light energy into stable biochemical energy, alongside the photolysis of water molecules
into hydrogen and oxygen.
◦Chemical reduction of Carbon Dioxide (CO₂) into energy-dense carbohydrates (Glucose).
•Gaseous Exchange: Regulated via microscopic Stomata. The opening and closing mechanism is fully
driven by the turgor pressure of Guard Cells (swelling when water enters, shrinking to close).
B. Heterotrophic Nutrition (Dependent Structures)
•Holozoic Internalization and chemical breakdown of solid/liquid organic food particles (e.g., Humans,
Amoeba via pseudopodia).
•Saprophytic External enzyme secretion onto dead or decaying matter followed by absorption of soluble
compounds (e.g., Fungi, Rhizopus).
•Parasitic Long-term extraction of nutrients directly from the living host organism without killing it
immediately (e.g., Cuscuta/Amarbel, Tapeworm).
C. Human Alimentary Architecture & Enzymatic Digestion
•Pathway: Mouth →Esophagus (Peristaltic movement) →Stomach →Small Intestine →Large Intestine →
Anus.
•Salivary Glands: Produce Saliva containing Salivary Amylase (converts complex starch to maltose sugar).
Class 10 Biology | Chapter 1: Life Processes Page 1 of 4
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LIFE PROCESSES

Class 10 Biology — Visual Revision & Mind Map

CENTRAL CONCEPT Life Processes: The basic essential maintenance functions performed by all living organisms to sustain life on Earth, repair cellular structures, and counteract molecular breakdown.

1. NUTRITION 2. RESPIRATION 3. TRANSPORT 4. EXCRETION Intake and utilization of Oxidative cellular Internal bulk distribution (^) Isolation, processing, and nutrients to generate breakdown^ of^ food^ system for water, vital absolute^ elimination^ of^ toxic metabolic energy and build molecules (glucose) to minerals, manufactured nitrogenous metabolic waste body tissues. synthesize dynamic food, and biological gases. materials. chemical energy (ATP). 1. Nutrition

A. Autotrophic Nutrition (Self-Sustaining)

  • (^) Mechanism: Photosynthesis executed by green plants and specific cyanobacteria using environmental inorganic raw materials.
  • Balanced Equation: 6CO ₂ + 12H ₂ O →(Sunlight / Chlorophyll) →C ₆ H ₁₂ O ₆ + 6O ₂ + 6H ₂ O
  • Core Sequential Stages: ◦ Absorption of radiant solar energy by light-harvesting chlorophyll molecules. ◦ Conversion of light energy into stable biochemical energy, alongside the photolysis of water molecules into hydrogen and oxygen. ◦ (^) Chemical reduction of Carbon Dioxide (CO₂) into energy-dense carbohydrates (Glucose).
  • (^) Gaseous Exchange: Regulated via microscopic Stomata. The opening and closing mechanism is fully driven by the turgor pressure of Guard Cells (swelling when water enters, shrinking to close).

B. Heterotrophic Nutrition (Dependent Structures)

  • Holozoic (^) Internalization and chemical breakdown of solid/liquid organic food particles (e.g., Humans, Amoeba via pseudopodia).
  • Saprophytic (^) External enzyme secretion onto dead or decaying matter followed by absorption of soluble compounds (e.g., Fungi, Rhizopus).
  • Parasitic^ Long-term extraction of nutrients directly from the living host organism without killing it immediately (e.g., Cuscuta/Amarbel, Tapeworm).

C. Human Alimentary Architecture & Enzymatic Digestion

  • (^) Pathway: Mouth →Esophagus (Peristaltic movement) →Stomach →Small Intestine →Large Intestine → Anus.
  • (^) Salivary Glands: Produce Saliva containing Salivary Amylase (converts complex starch to maltose sugar).
  • (^) Stomach Gastric Complex: Secretes gastric juices: ◦ Hydrochloric Acid (HCl): Generates an optimal acidic pH (~2) and kills ingested pathogens. ◦ Pepsin: Proteolytic enzyme that acts in an acidic medium to break down complex proteins. ◦ Mucus: Provides structural protection to the stomach inner lining against self-digestion by HCl.
  • (^) Liver & Pancreas Secretions (Discharged to Small Intestine): ◦ (^) Liver: Secretes Bile Juice which emulsifies large lipid/fat globules into smaller droplets, expanding available surface area, and alkalinizes incoming chyme. ◦ (^) Pancreas: Delivers Trypsin (cleaves proteins into peptides) and Lipase (hydrolyzes emulsified fats into fatty acids and glycerol).
  • (^) Absorption Engine: The inner lining of the Small Intestine contains thousands of finger-like vascular projections called Villi that exponentially increase the absorptive surface area for nutrient uptake into the bloodstream. 2. Respiration The total metabolic cellular sequence where glucose is metabolized to yield adenosine triphosphate (ATP).

Pathways of Glucose Breakdown (Cytoplasm to Organelle)

All respiration variants initiate with the conversion of Glucose (6-carbon) to Pyruvate (3-carbon) inside the cytoplasm. Absence of Oxygen (Anaerobic) Lack of Oxygen (Oxygen Deficit) Presence of Oxygen (Aerobic) In Yeast Cells In Muscle Cells In Mitochondria Ethanol + CO₂ +^2 ATP^ Lactic^ Acid^ +^^2 ATP^ CO₂ + H₂O +^38 ATP (Fermentation) (Causes localized muscle cramps) (Highly efficient energy yield)

Human Respiratory Apparatus

  • (^) Structural Route: Nostrils →Nasal Passage →Pharynx →Larynx →Trachea →Bronchi →Bronchioles → Alveoli.
  • (^) Tracheal Architecture: Enclosed by specialized structural rings of cartilage which completely prevent structural collapse during inspiration when negative pressure develops.
  • Alveolar Network: Millions of microscopic air sacs presenting an extremely thin, highly vascular membrane optimal for rapid gas exchange via passive diffusion (Oxygen moves in, Carbon Dioxide moves out). 3. Transportation Systems

A. Human Internal Circulatory Framework

  • The Human Heart: A specialized 4-chambered muscular pump designed to strictly partition oxygenated and deoxygenated blood streams, optimizing metabolic efficiency. ◦ Right Atrium & Ventricle: Receives oxygen-depleted blood from body tissues and propels it to the lungs for oxygenation.
  • (^) Solid/liquid secondary metabolic chemical wastes are compartmentalized securely inside aging cellular vacuoles, old falling leaves, or isolated within non-functional heartwood elements as structural resins and gums in dead old xylem. High-Yield Board Examination Focal Points: Ensure thorough conceptual mastery of the three complete biochemical pathways of Pyruvate breakdown , the morphological and functional differences between Arteries and Veins , and the step-by-step mechanism of ultrafiltration and reabsorption inside a Nephron unit. Practice accurate line diagrams of the Human Heart (showing valve direction and compartmental walls) and the Human Alimentary Canal.