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
- Teeth and Its Types
- Structure of a Tooth
Maharashtra State Board: Class 7
Teeth and Its Types:
The teeth play a key role in starting the process of digestion by chewing and breaking food into small pieces, making it easier to swallow and digest. There are four types of teeth, and each type has a specific function.
| Type of Teeth | Location | Function |
|---|---|---|
| Incisors | Front of the mouth (4 on top, 4 on the bottom) | Used for cutting and biting food (e.g., biting into an apple) |
| Canines | Next to the incisors (2 on top, 2 on the bottom) | Help in tearing food (e.g., ripping meat) |
| Pre-molars | Behind the canines (4 on top, 4 on the bottom) | Used for crushing and grinding food into smaller pieces |
| Molars | At the back of the mouth (6 on top, 6 on the bottom) | Help with grinding and chewing tough or hard foods thoroughly |
Teeth
Maharashtra State Board: Class 7
Structure of a Tooth:
- Enamel: The outer layer of the tooth covers the visible part (crown). It is the hardest substance in the body, made from calcium salts. It protects the inner parts of the tooth from damage and decay.
- Dentin: It is located beneath the enamel and forms the bulk of the tooth. Softer than enamel but still strong, giving the tooth its shape and support.
- Pulp: The innermost part of the tooth contains nerves and blood vessels. It provides nourishment and sensation to the tooth.
- Root and Cementum: The root anchors the tooth in the jawbone, keeping it stable. The cementum covers the root and helps attach the tooth to the surrounding bone through tiny fibres.
Shaalaa.com | The Teeth - Dentition
to track your progress
Related QuestionsVIEW ALL [16]
Collect data from your friends, neighbours and classmates to know more about “milk teeth".
Tabulate your data. One way of doing it is given below:
| S.No. | Age at which first tooth fell | Age at which last tooth fel | No. of teeth lost | No. of teeth replaced |
| 1. | ||||
| 2. | ||||
| 3. | ||||
| 4. | ||||
| 5. |
Find out from at least twenty children and find the average age at which children lose the milk teeth. You may take help of your friends.
