Topics
Matter in Our Surroundings
- Matter (Substance)
- Characteristics of Particles (Molecules) of Matter
- The Solid State
- The Liquid State
- The Gaseous State
- Plasma
- Bose-einstein Condensate
- Change of State
- Concept of Evaporation
- Concept of Melting (Fusion)
- Vaporisation or Boiling
- Sublimation
- Concept of Freezing (Solidification)
- Concept of Condensation (Liquefaction)
- Concept of Desublimation (Deposition)
Is Matter Around Us Pure
- Matter (Substance)
- Natural substances
- Mixture
- Types of Mixtures
- Introduction to Solutions
- Concentration of a Solution
- Suspension Solution
- Colloidal Solution
- Evaporation Method
- Solvent Extraction (Using a Separating Funnel Method)
- Sublimation
- Chromatography Method
- Simple Distillation Method
- Fractional Distillation Method
- Crystallisation Method
- Classification of Change: Physical Changes
- Chemical Reaction
- Pure Substances
- Compound
- Elements
Atoms and Molecules
- History of Atom
- Laws of Chemical Combination
- Law of Conservation of Mass
- Law of Constant Proportions (Law of Definite Proportions)
- Dalton’s Atomic Theory
- Atoms: Building Blocks of Matter
- Symbols Used to Represent Atoms of Different Elements
- Atomic Mass
- Relative Atomic Mass (RAM)
- Molecules
- Classification of Molecules
- Difference Between Atoms and Molecules
- Ions (Radicals) and Its Types
- Chemical Formula or Molecular Formula
- Molecular Mass
- Formula Unit Mass
- Mole Concept
- Atoms and Molecules Numericals
Structure of the Atom
- Existence of Charged Particles in Matter
- Atoms: Building Blocks of Matter
- Discovery of Charged Particles in Matter
- Protons (p)
- Electrons (e)
- Neutrons (n)
- J. J. Thomson’s Atomic Model
- Advantage and Limitations of Thomson’s Atomic Model
- Lord Rutherford’s Atomic model
- Limitations of Rutherford’s Atomic Model
- Neils Bohr’s Model of an Atom
- Electronic Configuration of Atom
- Periodic Trends in the Modern Periodic Table
- Different Ways to Determine Valency
- Atomic Number (Z), Mass Number (A), and Number of Neutrons (n)
- Atomic Mass
- Uses of Radioactive Isotopes
- Isotopes
- Atoms and Molecules Numericals
The Fundamental Unit of Life
- The Invention of the Microscope and the Discovery of Cell
- Cell Theory
- Prokaryotic and Eukaryotic Cell
- Cell Organelles
- Structure of the Cell > Plasma Membrane / Cell Membrane
- Structure of the Cell > Cell Wall: “Supporter and Protector”
- Structure of the Cell > Nucleus: “Brain” of the Cell
- Structure of the Cell > Cytoplasm: “Area of Movement”
- Endoplasmic Reticulum (ER)
- Golgi Apparatus - "The delivery system of the cell"
- Lysosome - “Suicidal Bag”
- Mitochondria - “Power House of the Cell”
- Plastids
- Non-living Substances Or Cell Inclusion
- Plant Cell Vs Animal Cell
- Cell Division: an Essential Life Process
Tissues
- Tissues - “The Teams of Workers”
- Plant and Animals Tissue
- Plant Tissues
- Meristems or Meristematic Tissues
- Permanent Tissue
- Simple Permanent Tissues (Supporting Tissue)
- Complex Permanent Tissues
- Complex Permanent Tissue: Xylem Structure and Function (Conducting Tissue)
- Complex Permanent Tissue: Phloem Structure and Function (Conducting Tissue)
- Animal Tissues
- Epithelial Tissue
- Connective Tissue
- Muscular Tissue
- Nervous Tissue
Diversity in Living Organisms
- Introduction of Biological Classification
- Classification of Living Organisms
- Taxonomic Hierarchy of Living Organisms: Unit of Classification
- Five Kingdom Classification
- Kingdom Monera
- Kingdom Protista
- Kingdom Fungi
- Classification of Kingdom Plantae
- Kingdom Animalia
- Differences Between Plantae (Plants) and Animalia (Animals)
- Classification of Kingdom Plantae
- Kingdom Plantae: Thallophyta (Algae)
- Kingdom Plantae: Thallophyta (Fungi)
- Cryptogams > Division II- Bryophytes
- Cryptogams > Division III- Pteridophytes
- Phanerogams > Division I-Gymnosperms
- Phanerogams > Division II- Angiosperms
- Kingdom Animalia
- Phylum: Porifera
- Phylum: Cnidaria/Coelenterata
- Phylum: Platyhelminthes
- Invertebrate: Phylum Nematoda
- Phylum: Annelida
- Phylum: Arthropoda
- Phylum: Mollusca
- Phylum: Echinodermata
- Subphylum: Prochordata
- Subphylum: Vertebrata/Craniata
- Invertebrata and Vertebrata
- Taxonomy and Systematics
- Nomenclature
Motion
- Force and Motion
- Describing Motion
- Motion Along a Straight Line
- Types of Motion
- Measuring the Rate of Motion - Speed with Direction
- Rate of Change of Velocity
- Distance and Displacement
- Displacement - Time Graph Or Distance - Time Graph
- Velocity - Time Graphs
- Equations of Motion by Graphical Method
- Derivation of Velocity - Time Relation by Graphical Method
- Derivation of Displacement - Time Relation by Graphical Method
- Derivation of Displacement - Velocity Relation by Graphical Method
- Uniform Circular Motion (UCM)
- Motion (Numerical)
Force and Laws of Motion
Gravitation
Work and Energy
Sound
- Sound Waves
- Production of Sound
- Propagation of Sound
- Sound Need a Medium to Travel
- Sound Waves Are Longitudinal Waves
- Characteristics of Sound
- Speed of Sound (Velocity of Sound)
- Reflection of Sound Waves
- Echo
- Reverberation
- Uses of Multiple Reflection of Sound
- Range of Hearing in Humans
- Ultrasonic Sound Or Ultrasound
- SONAR
- Human Ear
- Sound (Numerical)
Improvement in Food Resources
- Improvements in Food Resources
- Improvement in Crop Yields
- Crop Variety Improvement
- Crop Production Improvement
- Crop Protection Management
- Methods to Replenish Nutrients in Your Soil
- Manuring (Biomanuring)
- Fertilizers
- Improved methods of agriculture
- Agricultural Assistance Programme
- Poultry Farm Management
- Animal Husbandry (Livestock) > Pisciculture (Fish Farming)
- Animal Husbandry (Livestock) > Apiculture (Bee Farming)
Why Do We Fall ill
- Disease
- Categories of Disease
- Acute and Chronic Diseases
- Causes of Disease
- Infectious Agents
- Manifestation of Diseases
- Modes of Transmission of Diseases
- Organ-specific and Tissue-specific Manifestations
- Principles of Prevention of Diseases
- Principles of Treatment of Diseases
Natural Resources
- Introduction
- Experiment
- Types of Simple Permanent Tissues
Maharashtra State Board: Class 9
Introduction:
Simple permanent tissue, also known as homogeneous tissue, is a type of plant tissue made up of only one type of cell. These cells share the same origin, structure, and function, working together to support the plant's growth and survival. Unlike complex tissues, which consist of multiple cell types, simple permanent tissues are uniform in composition. These tissues ensure that plants can maintain their structure, store nutrients, and adapt to environmental conditions efficiently. And play a vital role in providing structural support, protection, and storage for the plant.
Maharashtra State Board: Class 9
Experiment
1. Aim: To observe the structure and arrangement of epidermal cells in a plant leaf under a microscope.
2. Requirements: fresh and fleshy leaf of Rhoeo, lily, or any other plant, forceps, dilute safranin solution, microscope, slide, cover slip, and compound microscope.
3. Procedure:
- Take a fresh leaf of Rhoeo, lily or any other plant and gently pull and tear it obliquely to expose the transparent epidermis at the cut margins.
- Using forceps, carefully remove the transparent epidermis from the leaf.
- Place the epidermis in a dilute safranin solution for 1 minute to stain it.
- Take the stained epidermis and spread it evenly on a microscope slide.
- Cover it with a coverslip and observe under a compound microscope.
Tissue of Rhoeo plant
4. Observation: The epidermis appears as a single layer of flat, tightly packed cells without intercellular spaces. The outer surface of the epidermis is covered by a waxy cuticle layer.
5. Conclusion: The experiment shows that the epidermis is a protective layer made up of tightly packed flat cells. The waxy cuticle on the epidermis helps to retain water in the underlying tissues and prevents water loss. This layer plays a vital role in protecting plants from dehydration and external damage.
Maharashtra State Board: Class 9
Types of Simple Permanent Tissues:
| Type of Tissue | Parenchyma | Collenchyma | Sclerenchyma |
| Structure | Living cells, thin walls, large intercellular spaces. | Living cells, thickened corners, small intercellular spaces. | Dead cells, thick walls, no intercellular spaces. |
| Function | Photosynthesis, storage, gaseous exchange, floating. | Provides flexibility and mechanical support. | Provides strength and rigidity. |
| Location | Leaves, roots, stems, newly formed branches. | Leaves, stems. | Stems, seed coats, nut coverings, and veins of leaves. |
| Intercellular Spaces | Present | Minimal | Absent |
| Cell Wall Composition | Made of cellulose. | Made of cellulose and pectin. | Made of lignin. |
| Special Features | Includes chlorenchyma (photosynthesis) and aerenchyma (floating in aquatic plants). | Allows plants to bend without breaking. | Adds hardness and rigidity to plant parts. |
| Figure |  |
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Example
Name types of simple tissues.
- Simple permanent tissues are of three types:
- Parenchyma
- Collenchyma
- Sclerenchyma
- Parenchyma tissue is of two types:
- Aerenchyma
- Chlorenchyma
Example
Which tissue makes up the husk of coconut?
The husk of a coconut is made up of sclerenchyma tissue.
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