Hierarchical Organisation & Epithelial Tissues — NEET Biology
📚 Practice ConceptCells, tissues, organs and organ systems split up the work in a way that ensures the survival of the body as a whole and exhibit division of labour. Different tissues combine to form organs. Organs work together by performing one or more functions in the body. Epithelial are sheet like tissues lining the body surface and its cavities, ducts and tubes. Epithelia have one free surface facing a body fluid or the outside environment. Their cells are structurally and functionally connected at junctions.
Which of the following statements accurately describe the concept of 'division of labour' in complex multicellular animals? S1: Division of labour in complex animals primarily occurs at the cellular level, where individual cells perform all basic life functions independently. S2: The process of division of labour ensures that different groups of cells, tissues, organs, and organ systems specialize in distinct roles. S3: In complex animals, a well-organised manner of function execution by different cell groups contributes to overall body survival through division of labour. S4: Unicellular organisms exhibit a sophisticated level of division of labour, involving specialized tissues and organs for various functions. S5: The coordinated activities resulting from division of labour are fundamental to the efficiency and survival of the body as a whole in multicellular organisms.
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