Topics
Living World
- What is ‘Living’?
- Taxonomical Aids
Systematics of Living Organisms
- Systematics of Living Organisms (Introduction)
- Systematics of Living Organisms (Introduction)
- Concept of Systematics
- Concept of Systematics
- Classification of Taxonomy
- Classification of Taxonomy
- Three Domains of Life
- Three Domains of Life
- Chemotaxonomy
- Chemotaxonomy
- Numerical Taxonomy
- Numerical Taxonomy
- Cladogram
- Cladogram
- Phylogeny
- Phylogeny
- DNA Barcoding
- DNA Barcoding
- Taxonomic Hierarchy of Living Organisms: Unit of Classification
- Taxonomic Hierarchy of Living Organisms: Unit of Classification
- Taxonomic Hierarchy
- Taxonomic Hierarchy
- Units of Classification
- Units of Classification
- Binomial Nomenclature
- Salient Features of Five Kingdoms
- Salient Features of Five Kingdoms
- Acellular Organisms
- Acellular Organisms
Kingdom Plantae
- Classification of Kingdom Plantae
- Salient Features of Major Plant Groups Under Cryptogams
- Salient Features of Major Plant Groups Under Phanerogams
- Plant Life Cycle and Alternation of Generations
Kingdom Animalia
- Criteria Used for Animal Classification
- Animal Body Plan
- Animal Classification
Cell Structure and Organization
- Cell: Structural and Functional Unit of Life
- Types of Cells
- Components of Eukaryotic Cell
Biomolecules
- Biomolecules in Living System
- Biomolecules in the Cell
- Biomolecules in the Cell > Carbohydrates
- Biomolecules in the Cell > Lipids
- Biomolecules in the Cell > Proteins
- Biomolecules in the Cell > Nucleic Acids
- Biomolecules in the Cell > Enzymes
- Nature of Enzyme Action
- Nomenclature of Enzymes
- Classification of Enzymes
- Mechanism of Enzyme Action
- Enzyme - Substrate Interactions
- Factors Affecting Enzyme Activity
- Metabolism
- Metabolic Pool
- Secondary metabolites (SMs)
Cell Division
Plant Tissues and Anatomy
- Tissues - “The Teams of Workers”
- Meristems or Meristematic Tissues
- Permanent Tissue
- Tissue System
- Secondary Growth in Plants
- Wood
- Cork Cambium and Secondary Growth
- Anatomy of Root, Stem and Leaf
Morphology of Flowering Plants
- Phanerogams > Division II- Angiosperms
- Morphology
- Study of Some Important Families
Animal Tissue
Study of Animal Type : Cockroach
- Habit and Habitat
- Systematic Position
- External Morphology
- Body Cavity
- Digestive System of Cockroach
- Circulatory System Or Blood Vascular System
- Human Respiratory System
- Reproduction System
- Interactions with Mankind
Photosynthesis
- Concept of Photosynthesis
- Chloroplasts
- Nature of Light
- Mechanism of Photosynthesis
- Light-Dependent Phase of Photosynthesis
- Photophosphorylation
- Light-Independent Phase of Photosynthesis
- Photorespiration
- C4 Pathway Or Hatch-slack Pathway
- Cam - Crassulacean Acid Metabolism
- Factors Affecting Photosynthesis
Respiration and Energy Transfer
- Production of ATP
- Cellular Respiration
- Phases of Respiration: Glycolysis
- Phases of Respiration: Pyruvate Oxidation (Link Reaction)
- Phases of Respiration: Electron Transport System (Ets) and Oxidative Phosphorylation
- Phases of Respiration: Tricarboxylic Acid Cycle (Citric Acid Cycle or Kreb’s Cycle)
- Phases of Respiration: Electron Transport Chain (Electron Transfer System)
- Phases of Respiration: Fermentation
- Respiratory Balance Sheet
- Amphibolic Pathways
- Utility of Stepwise Oxidation
- Respiratory Quotient (R.Q.)
Human Nutrition
- Nutrients and Nutrition
- Component of Food
- Human Digestive System
- The Mouth and Buccal Cavity
- The Salivary Glands
- The Teeth and Its Structure
- Tongue
- The Food Pipe/Oesophagus
- The Stomach
- The Small Intestine
- Pancreas (Islets of Langerhans)
- The Large Intestine
- Liver
- Physiology of Digestion
- Absorption of Food
- Assimilation of Food
- Egestion of Food
- Nutritional and Digestive Tract Disorders
Excretion and Osmoregulation
- Excretion
- Modes of Excretion: Ammonotelism, Ureotelism, and Uricotelism
- Human Excretory System
- Kidney and Its Internal Structure
- Structure of a Kidney Tubule (Nephrons)
- Function of the Kidney - “Production of Urine”
- Concentration of Urine
- Composition of Urine
- The Excretory Organs
- Common Disorders of the Urinary System
Skeleton and Movement
- Movements and Locomotion
- Location and Structure of Skeletal Muscles
- Working of Skeletal Muscles
- Mechanism of Muscle Contraction
- Physiology of Muscle Relaxation
- Relaxation of Muscle Fibres
- Skeletal System
- Group of Skeleton
- Types of Joints
- Disorders Related to Muscles
- Disorders Related to Bones
- Introduction
- Functions of the Large Intestine
Maharashtra State Board: Class 7
Introduction:
The large intestine is the final part of the digestive system. It is responsible for absorbing water from the undigested food and preparing it to be removed from the body as waste. It is about 1.5 meters long (5 feet) and wider than the small intestine but much shorter.
Maharashtra State Board: Class 7
Functions of the Large Intestine:
- Absorption of Water: The main function of the large intestine is to absorb water and minerals from the undigested food that enters from the small intestine. This process prevents dehydration by reclaiming water.
- Formation of Waste Material: After absorbing water, the undigested material becomes more solid and forms faeces. Faeces contain fibre, bacteria, and waste products that cannot be digested.
- Role of the Appendix: A small, tube-like structure called the appendix is attached to the first part of the large intestine. The appendix has no significant role in digestion, but it can sometimes become infected (causing appendicitis).
- Elimination of Waste: The waste material is stored temporarily in the rectum. It is then expelled from the body through the anus during the process of defecation (passing stool).
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