Topics
Living World
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
- Binomial Nomenclature
- Salient Features of Five Kingdoms
- Salient Features of Five Kingdoms
- Acellular Organisms
- Acellular Organisms
Kingdom Plantae
Kingdom Animalia
Cell Structure and Organization
Biomolecules
- Biomolecules in Living System
- Biomolecules in the Cell
- Carbohydrates
- Lipids
- Proteins
- Nucleic Acids
- 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
Morphology of Flowering Plants
Animal Tissue
Study of Animal Type : Cockroach
Photosynthesis
- Introduction of Photosynthesis
- Chloroplasts
- Nature of Light
- Mechanism of Photosynthesis
- Light Dependent Reaction (Hill Reaction \ Light Reaction)
- Photophosphorylation
- Light Independent Reactions (Dark Reaction \ Biosynthetic Phase)
- Photorespiration
- C4 Pathway Or Hatch-slack Pathway
- Cam - Crassulacean Acid Metabolism
- Factors Affecting Photosynthesis
Respiration and Energy Transfer
- Formation of ATP
- Respiration
- Types of Respiration: Aerobic and Anaerobic Respiration
- Phases of Respiration: Glycolysis
- Phases of Respiration: Pyruvate Oxidation (Link Reaction)
- Phases of Respiration: 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
- 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: Substances to Be Eliminated
- Modes of Excretion: Ammonotelism, Ureotelism, and Uricotelism
- Human Excretory System
- Kidney and Its Internal Structure
- Kidney Tubule (Nephrons)
- Function of the Kidney - “Production of Urine”
- Concentration of Urine
- Composition of Urine
- Accessory Excretory Organs
- Common Disorders of the Urinary System
Skeleton and Movement
Notes
Tissue:
A group of cells that are specialized to perform a particular function forms a tissue.
Tissues are mainly classified into two types:
1. Plant Tissues
2. Animal Tissues
- Cells form groups cells that need to perform a single task often group together.
- This grouping of cells together to perform a function efficiently is called a Tissue.
- For Example, Muscles and Blood.
- The tissue cells have the same structure and they perform the same function.
Tissues of Plants and Animals:
|
Plant Tissues |
Animal Tissues |
|
plants do not move so their tissues are predominantly the ones that provide support to them so that they can stand erect. |
Animals need more energy as compared to plants because they are not stationary. Their tissues are the ones that can support movement. |
|
These tissues are made up of dead cells because dead cells can also provide mechanical strength to the plants and do not require much maintenance. |
The tissues in case of animals are made up of living cells so that they can move and perform several functions. |
|
Only certain parts of the plant can grow. The tissues present in such regions of and divide themselves and form new tissues. |
Cells in animals grow uniform early and not only in certain regions of the body. |
|
The structure of plant tissues is not very specialized as compared to animals |
The organs and organ systems in animals are highly developed. |
Definition
Tissue: The tissue is a group of cells having similar origin, structure & function.
Notes
Tissue:
The tissue is a group of cells having similar origin, structure & function.
So it is pretty clear that tissues are present in multicellular organisms. Different types of tissues come together to perform different functions. Let us discuss about plant and animal tissues.
-
Plant tissue
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Meristems
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Permanent
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Simple permanent tissue
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Complex permanent tissue
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Xylem
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Phloem
-
-
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Animal tissue
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Epithelial tissue
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Squamous epithelium
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Cuboidal epithelium
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Columnar epithelium
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Glandular epithelium
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Connective tissue
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Blood
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Bone
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Cartilage
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Areolar Connective Tissue
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Adipose Connective Tissue
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Muscle tissue
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Striated muscles/skeletal muscles/voluntary muscles
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Unstriated muscles /smooth muscles/involuntary muscles
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Cardiac Muscles
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Nervous tissue
Example
What is tissue?
A tissue, in biology, is defined as a group of cells that possess a similar structure and perform a specific function. The word tissue originates from French, which means "to weave."
Example
What is the utility of tissues in multi-cellular organisms?
In unicellular organisms, a single cell performs all the basic functions such as respiration, movement, excretion, digestion, etc. But in multicellular organisms, cells are grouped to form tissues. These tissues are specialised to carry out a particular function at a definite place in the body. For example, the muscle cells form muscular tissues which helps in movement, nerve cells form the nervous tissue which helps in transmission of messages. This is known as division of labour in multicellular organisms. It is because of this division of labour that multicellular organisms are able to perform all functions efficiently.
