Chapter 3 - Tissues

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CBSE Class 9 Science Chapter 3: Tissues in action

CBSE Notes help students revise important topics quickly by turning lengthy textbook explanations into short and clear points. CBSE Notes for Class 9 Science make it easier to remember definitions, classifications, and diagrams, save time during revision, and practise NCERT exercises, MCQs, and application-based questions. For Chapter 3, “Tissues in Action”, notes are useful because the chapter covers plant tissues, animal tissues, and their sub-types. Clear notes help students remember the functions of each tissue, avoid confusion between similar terms, and revise diagrams and functions before exams.

1.0 Download CBSE Notes in Class 9 Tissues in action

Get clear, exam-ready notes on Class 9 Science Chapter 3, covering plant and animal tissues, their classification, and functions. Download the notes below for quick revision anytime.

NCERT Solutions Class 9 Science Chapter 3 Notes

2.0 Important Concepts of Class 9 Science Chapter 3: Tissues in action

Plant vs Animal Tissues — Key Differences

Plants are fixed in place → need rigid cell walls for support; animals move → cells lack rigid walls, allow flexibility.
Plants make their own food (photosynthesis); animals have digestive tissues to obtain nutrients.
Both have transport tissues (water, food, gases); growth tissue structure/function differs between the two.

Growth Tissues in Plants

Annual growth rings: seen in tree trunk cross-section; formed yearly, width varies with growing conditions → used to estimate tree age and past climate.
Intercalary meristem: present at nodes of stem; responsible for regrowth after cutting/grazing (e.g., hedges, grass, lawns).
Lateral meristem: produces cork cambium beneath epidermis as stem matures → forms cork cells (dead, tightly packed, impermeable) → together form bark.

Plant Tissue Systems

Tissue System	Composition	Function
Dermal	Epidermis, cuticle	Outer protective covering; reduces water loss
Ground	Parenchyma, collenchyma, sclerenchyma	Main body of plant between dermal & vascular tissue
Vascular	Xylem + Phloem	Transport of water, minerals, and food

Epithelial Tissue Types (Animals)

Function	Structure	Location
Exchange (diffusion)	Single layer, thin, flat cells	Blood vessels, lungs
Protection	Multiple layers; outer cells flat, tightly packed	Skin, mouth, oesophagus
Secretion	Cuboidal/columnar, specialized	Salivary glands, sweat glands, stomach lining
Sensory	Receptor cells with cilia	Nostrils, taste buds, inner ear
Absorption	Single layer, tall columnar cells (often with hair-like projections)	Small intestine lining

Blood

Red colour due to haemoglobin (iron-containing protein) in RBCs.
RBC lifespan ≈ 4 months; continuously replaced.
WBCs gather at infection sites → causes inflammation, redness, swelling, pus.

Connective Tissue Identification

Body Test	Feeling	Function	Tissue
Touch elbow	Hard, rigid	Strength, support, protection	Bone
Press ear/nose	Soft, flexible, springs back	Flexibility, shock absorption	Cartilage
Wiggle fingers	Movement felt in forearm	Connects muscle to bone → movement	Tendon
Move leg at knee	Limited range	Connects bone to bone; limits movement, prevents dislocation	Ligament

Stem Cells

Can divide to form new cells.
Used in bone marrow transplants for blood cancers (leukemia) and genetic disorders (thalassemia).

Totipotency (F. C. Steward's Carrot Experiment, 1958)

A single phloem cell of carrot, cultured in nutrient medium (sugars + hormones), can dedifferentiate → form undifferentiated cell mass → redifferentiate into roots, shoots, and a complete plant.
Totipotency: ability of a cell to develop into a complete organism (similar to zygote development).
Animal cells generally lack this level of totipotency.

Effect of conditions on cultured cell growth:

Light	Air	Medium	Result
Yes	No	Solid + nutrients	Reduced growth
Yes	Yes	Liquid + nutrients	20% increase (maximum biomass)
No	Yes	Liquid + nutrients	Reduced growth (minimum biomass)

Commercial uses of totipotency: micropropagation (rapid plant multiplication), production of disease-free/improved plant varieties.

Crown Gall Disease

Caused by bacterium Agrobacterium tumefaciens.
Tumour-like swellings form on stems due to uncontrolled cell division.
Its gene-transfer mechanism is now used as a tool in plant tissue culture & genetic engineering — for improved crops, phytochemical production, and disease-resistant plants.

3.0Detailed CBSE Notes Class 9 Science Tissues in action

Other Study Materials for Class 9 Science

Students can use additional study materials along with these notes, such as:

Class 9 Science NCERT textbook

Class 9 Science NCERT Solutions

Class 9 Science Syllabus

Class 9 Science Sample Papers

4.0 Why CBSE Notes for Class 9 Science Chapter 3: Tissues in Action

Understand the Classification of Tissues: These notes help students learn how tissues are classified into plant tissues and animal tissues along with their structure and functions.
Learn About Plant Tissues: The notes explain meristematic tissues and permanent tissues, including their role in plant growth, support, and transportation of materials.
Understand Animal Tissue Functions: Students can easily revise different types of animal tissues such as epithelial, connective, muscular, and nervous tissues and their specific functions.
Simplify Complex Tissue Concepts: The notes present important characteristics, locations, and functions of different tissues in a clear and organised manner for better understanding.
Strengthen Conceptual Understanding: These notes help students connect tissue structure with their functions and understand how tissues support the activities of multicellular organisms.
Support Quick Revision: Important definitions, features, and differences between tissue types are summarised to help students revise effectively before CBSE examinations.

Chapter-wise CBSE Notes for Class 9 Science:

Class 9 Science Chapter 1 - Exploration: Entering the world of secondary science Notes

Class 9 Science Chapter 2 - Cell:The building blocks of life Notes

Class 9 Science Chapter 3 - Tissues in action Notes

Class 9 Science Chapter 4 - Describing motion around us Notes

Class 9 Science Chapter 5 -Exploring mixtures and their separation Notes

Class 9 Science Chapter 6 - How forces affect motion Notes

Class 9 Science Chapter 7 - Work,Energy and simple machines Notes

Class 9 Science Chapter 8 - Journey inside the atom Notes

Class 9 Science Chapter 9 - Atomic foundations of Matter Notes

Class 9 Science Chapter 10 - Sound Waves:Characteristics Applications Notes

Class 9 Science Chapter 11 - Reproduction:How Life Continues Notes

Class 9 Science Chapter 12 - Patterns in life:Diversity and Classification Notes

Class 9 Science Chapter 13 - Earth as a system:Energy,Matter and Life Notes

Chapter-wise NCERT Solutions for Class 9 Science:

Chapter 1 - Exploration: Entering the world of secondary science

Chapter 2 - Cell: The building blocks of life

Chapter 3 - Tissues in action

Chapter 4 - Describing motion around us

Chapter 5 - Exploring mixtures and their separation

Chapter 6 - How forces affect motion

Chapter 7 - Work,Energy and simple machines

Chapter 8 - Journey inside the atom

Chapter 9- Atomic foundations of Matter

Chapter 10- Sound Waves: Characteristics Applications

Chapter 11- Reproduction:How Life Continues

Chapter 12 - Patterns in life:Diversity andClassification

Chapter 13 - Earth as a system:Energy,Matter and Life

Frequently Asked Questions

Join ALLEN!

(Session 2026 - 27)

Name

Mobile Number

Class

Choose class

Goal

Choose your goal

Preferred Programs

Preferred Mode

State

Choose State

I agree to

I authorise ALLEN Career Institute Pvt Ltd to send me regular updates via Phone calls, Whatsapp, SMS, Robocalls (Automated Calls), Emails, or on postal address.

CBSE Class 9 Science Chapter 3: Tissues in action

CBSE Notes help students revise important topics quickly by turning lengthy textbook explanations into short and clear points. CBSE Notes for Class 9 Science make it easier to remember definitions, classifications, and diagrams, save time during revision, and practise NCERT exercises, MCQs, and application-based questions. For Chapter 3, “Tissues in Action”, notes are useful because the chapter covers plant tissues, animal tissues, and their sub-types. Clear notes help students remember the functions of each tissue, avoid confusion between similar terms, and revise diagrams and functions before exams.

1.0 Download CBSE Notes in Class 9 Tissues in action

Get clear, exam-ready notes on Class 9 Science Chapter 3, covering plant and animal tissues, their classification, and functions. Download the notes below for quick revision anytime.

NCERT Solutions Class 9 Science Chapter 3 Notes

2.0 Important Concepts of Class 9 Science Chapter 3: Tissues in action

Plant vs Animal Tissues — Key Differences

Plants are fixed in place → need rigid cell walls for support; animals move → cells lack rigid walls, allow flexibility.
Plants make their own food (photosynthesis); animals have digestive tissues to obtain nutrients.
Both have transport tissues (water, food, gases); growth tissue structure/function differs between the two.

Growth Tissues in Plants

Annual growth rings: seen in tree trunk cross-section; formed yearly, width varies with growing conditions → used to estimate tree age and past climate.
Intercalary meristem: present at nodes of stem; responsible for regrowth after cutting/grazing (e.g., hedges, grass, lawns).
Lateral meristem: produces cork cambium beneath epidermis as stem matures → forms cork cells (dead, tightly packed, impermeable) → together form bark.

Plant Tissue Systems

Tissue System	Composition	Function
Dermal	Epidermis, cuticle	Outer protective covering; reduces water loss
Ground	Parenchyma, collenchyma, sclerenchyma	Main body of plant between dermal & vascular tissue
Vascular	Xylem + Phloem	Transport of water, minerals, and food

Epithelial Tissue Types (Animals)

Function	Structure	Location
Exchange (diffusion)	Single layer, thin, flat cells	Blood vessels, lungs
Protection	Multiple layers; outer cells flat, tightly packed	Skin, mouth, oesophagus
Secretion	Cuboidal/columnar, specialized	Salivary glands, sweat glands, stomach lining
Sensory	Receptor cells with cilia	Nostrils, taste buds, inner ear
Absorption	Single layer, tall columnar cells (often with hair-like projections)	Small intestine lining

Blood

Red colour due to haemoglobin (iron-containing protein) in RBCs.
RBC lifespan ≈ 4 months; continuously replaced.
WBCs gather at infection sites → causes inflammation, redness, swelling, pus.

Connective Tissue Identification

Body Test	Feeling	Function	Tissue
Touch elbow	Hard, rigid	Strength, support, protection	Bone
Press ear/nose	Soft, flexible, springs back	Flexibility, shock absorption	Cartilage
Wiggle fingers	Movement felt in forearm	Connects muscle to bone → movement	Tendon
Move leg at knee	Limited range	Connects bone to bone; limits movement, prevents dislocation	Ligament

Stem Cells

Can divide to form new cells.
Used in bone marrow transplants for blood cancers (leukemia) and genetic disorders (thalassemia).

Totipotency (F. C. Steward's Carrot Experiment, 1958)

A single phloem cell of carrot, cultured in nutrient medium (sugars + hormones), can dedifferentiate → form undifferentiated cell mass → redifferentiate into roots, shoots, and a complete plant.
Totipotency: ability of a cell to develop into a complete organism (similar to zygote development).
Animal cells generally lack this level of totipotency.

Effect of conditions on cultured cell growth:

Light	Air	Medium	Result
Yes	No	Solid + nutrients	Reduced growth
Yes	Yes	Liquid + nutrients	20% increase (maximum biomass)
No	Yes	Liquid + nutrients	Reduced growth (minimum biomass)

Commercial uses of totipotency: micropropagation (rapid plant multiplication), production of disease-free/improved plant varieties.

Crown Gall Disease

Caused by bacterium Agrobacterium tumefaciens.
Tumour-like swellings form on stems due to uncontrolled cell division.
Its gene-transfer mechanism is now used as a tool in plant tissue culture & genetic engineering — for improved crops, phytochemical production, and disease-resistant plants.

3.0Detailed CBSE Notes Class 9 Science Tissues in action

Other Study Materials for Class 9 Science

Students can use additional study materials along with these notes, such as:

Class 9 Science NCERT textbook

Class 9 Science NCERT Solutions

Class 9 Science Syllabus

Class 9 Science Sample Papers

4.0 Why CBSE Notes for Class 9 Science Chapter 3: Tissues in Action

Understand the Classification of Tissues: These notes help students learn how tissues are classified into plant tissues and animal tissues along with their structure and functions.
Learn About Plant Tissues: The notes explain meristematic tissues and permanent tissues, including their role in plant growth, support, and transportation of materials.
Understand Animal Tissue Functions: Students can easily revise different types of animal tissues such as epithelial, connective, muscular, and nervous tissues and their specific functions.
Simplify Complex Tissue Concepts: The notes present important characteristics, locations, and functions of different tissues in a clear and organised manner for better understanding.
Strengthen Conceptual Understanding: These notes help students connect tissue structure with their functions and understand how tissues support the activities of multicellular organisms.
Support Quick Revision: Important definitions, features, and differences between tissue types are summarised to help students revise effectively before CBSE examinations.