IB Biology:C3.Hierarchy of Subsystems in Multicellular Organisms

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What is the hierarchy of subsystems in multicellular organisms?

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The hierarchy includes cells, tissues, organs, organ systems, and organism.

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How do cells interact within a multicellular organism?

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Cells interact with each other at different levels in a hierarchy of organization: cells > organs > organ system > organism.

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What are tissues in multicellular organisms?

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Tissues are groups of cells of the same type that carry out a function. They may contain two or more cell types specialized for different aspects of the tissue's function.

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What is an organ in multicellular organisms?

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An organ is a group of different tissues in an animal or plant that work together to carry out a specific function of life.

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What is an organ system?

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An organ system is a group of organs interacting with each other to perform an overall function.

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What is an organism in the context of multicellular organisms?

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An organism is a living individual made up of interconnected parts – organ systems, composed of organs, made up of tissues with constituent cells.

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What are emergent properties in multicellular organisms?

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Emergent properties are characteristics of a whole organism that arise when the interaction of individual cells produce new functions.