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How is the division of labour at various levels of organisation in multicellular organisms correlated with their structure and function?
Multicellular organisms show division of labour through organised levels like cells, tissues organs and organ systems. Each structure is specialised for a particular function. For example, muscles help movement while nerves control coordination. Their structures suit their functions perfectly. ThisRead more
Multicellular organisms show division of labour through organised levels like cells, tissues organs and organ systems. Each structure is specialised for a particular function. For example, muscles help movement while nerves control coordination. Their structures suit their functions perfectly. This organisation increases efficiency, improves coordination among body parts and helps organisms perform complicated activities necessary for growth, survival and reproduction.
For more NCERT Solutions of Class 9 Science Exploration Chapter 3 Tissues in Action Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-3/
See lessLife begins when a single cell divides itself several times to give rise to a large number of cells. Explain.
Life begins with a single cell that continuously divides to produce many new cells. These cells gradually become specialised through differentiation and form tissues organs and organ systems. Different tissues perform specific functions like protection, movement and coordination. This organised deveRead more
Life begins with a single cell that continuously divides to produce many new cells. These cells gradually become specialised through differentiation and form tissues organs and organ systems. Different tissues perform specific functions like protection, movement and coordination. This organised development transforms one cell into a complete multicellular organism capable of carrying out all important life processes.
For more NCERT Solutions of Class 9 Science Exploration Chapter 3 Tissues in Action Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-3/
See lessIn all multicellular organisms, there is a hierarchy of organisation. Explain.
Multicellular organisms have a hierarchical organisation where cells form tissues, tissues form organs, organs form organ systems and organ systems together form the complete organism. Each level performs specialised functions while coordinating with other levels. This arrangement creates division oRead more
Multicellular organisms have a hierarchical organisation where cells form tissues, tissues form organs, organs form organ systems and organ systems together form the complete organism. Each level performs specialised functions while coordinating with other levels. This arrangement creates division of labour, increases efficiency and allows organisms to carry out complicated processes like digestion, movement, respiration and reproduction smoothly.
For more NCERT Solutions of Class 9 Science Exploration Chapter 3 Tissues in Action Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-3/
See lessWhy are Plant and Animal Tissues Different?
Plant and animal tissues are different because plants and animals perform different activities. Plants remain fixed, prepare food by photosynthesis and require strong supporting tissues. Animals move from place to place, respond quickly and need muscular and nervous tissues. Plant cells have rigid wRead more
Plant and animal tissues are different because plants and animals perform different activities. Plants remain fixed, prepare food by photosynthesis and require strong supporting tissues. Animals move from place to place, respond quickly and need muscular and nervous tissues. Plant cells have rigid walls, while animal cells remain flexible. Therefore, tissues differ according to structure, movement and functional requirements.
For more NCERT Solutions of Class 9 Science Exploration Chapter 3 Tissues in Action Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-3/
See lessHow do plants grow in girth?
Plants increase in girth because of lateral meristematic tissue found along the circumference of stems and roots. The cells divide continuously and add new cells on both sides, causing the stem to become thicker. In woody plants, this growth forms annual rings. Lateral meristem helps strengthen planRead more
Plants increase in girth because of lateral meristematic tissue found along the circumference of stems and roots. The cells divide continuously and add new cells on both sides, causing the stem to become thicker. In woody plants, this growth forms annual rings. Lateral meristem helps strengthen plants and supports increasing size as they mature over time.
For more NCERT Solutions of Class 9 Science Exploration Chapter 3 Tissues in Action Question Answer (2026-27)
https://www.tiwariacademy.com/ncert-solutions/class-9/science/exploration-chapter-3/
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