Four Basic Tissues & Organ Systems — NEET Biology
📚 Practice ConceptYou may be surprised to know that all complex animals consist of only four basic types of tissues. These tissues are organised in specific proportion and pattern to form an organ like stomach, lung, heart and kidney. When two or more organs perform a common function by their physical and/or chemical interaction, they together form organ system, e.g., digestive system, respiratory system, etc. Cells, tissues, organs and organ systems split up the work in a way that exhibits division of labour and contribute to the survival of the body as a whole.
Assertion (A): Organ systems exhibit division of labour in multicellular animals. Reason (R): An organ system is formed when two or more organs perform a common function by their physical and chemical interaction.
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