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You may have noticed that fibres of coconut husk are hard and brittle, whereas the leaf stalks of coriander are soft and flexible. Find out the reason.
Coconut husk fibres are hard and brittle because they mainly contain sclerenchyma tissue with thick lignified cell walls that provide strength and rigidity. In contrast, coriander leaf stalks contain collenchyma tissue with pectin-rich uneven walls. This tissue gives flexibility and support, allowinRead more
Coconut husk fibres are hard and brittle because they mainly contain sclerenchyma tissue with thick lignified cell walls that provide strength and rigidity. In contrast, coriander leaf stalks contain collenchyma tissue with pectin-rich uneven walls. This tissue gives flexibility and support, allowing the stalks to bend easily without breaking during movement or external pressure.
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 does water reach the leaves of tall trees?
Water reaches the leaves of tall trees through xylem tissue. Xylem vessels and tracheids form long tubular pathways that transport water and minerals from roots upward. Transpiration from leaf stomata creates a pulling force called transpiration pull, which helps move water against gravity. This cooRead more
Water reaches the leaves of tall trees through xylem tissue. Xylem vessels and tracheids form long tubular pathways that transport water and minerals from roots upward. Transpiration from leaf stomata creates a pulling force called transpiration pull, which helps move water against gravity. This coordinated process ensures continuous water supply to leaves for photosynthesis and other activities.
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 does food prepared in leaves reach other parts of the plant?
Food made in leaves through photosynthesis is transported to other plant parts by phloem tissue. The sieve tubes carry dissolved sugars and nutrients from leaves to roots, stems and fruits. Companion cells assist sieve tubes by regulating sugar loading and unloading. This transport system distributeRead more
Food made in leaves through photosynthesis is transported to other plant parts by phloem tissue. The sieve tubes carry dissolved sugars and nutrients from leaves to roots, stems and fruits. Companion cells assist sieve tubes by regulating sugar loading and unloading. This transport system distributes food throughout the plant for growth, storage, respiration and other metabolic activities.
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 do you think that a thick cuticle on the outer wall of epidermis is advantageous for a plant living in the desert but disadvantageous for a plant living underwater?
Desert plants benefit from a thick cuticle because it reduces water loss by transpiration and protects them from dry conditions. Aquatic plants live surrounded by water and need easy exchange of gases and substances with their environment. A thick cuticle would block these exchanges, reduce flexibilRead more
Desert plants benefit from a thick cuticle because it reduces water loss by transpiration and protects them from dry conditions. Aquatic plants live surrounded by water and need easy exchange of gases and substances with their environment. A thick cuticle would block these exchanges, reduce flexibility and interfere with normal absorption, making it disadvantageous for underwater plants.
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 lessOnce water is absorbed by plant roots, it has to travel against gravity through xylem. How do the ‘dead’ cells of the xylem work together with the living cells of leaves at the top to keep the water moving?
Xylem vessels and tracheids are dead, hollow cells that form continuous tubes for water transport. Living cells in leaves lose water through transpiration from stomata, creating a suction force called transpiration pull. This pull draws water upward through xylem against gravity. Thus, dead xylem ceRead more
Xylem vessels and tracheids are dead, hollow cells that form continuous tubes for water transport. Living cells in leaves lose water through transpiration from stomata, creating a suction force called transpiration pull. This pull draws water upward through xylem against gravity. Thus, dead xylem cells and living leaf cells work together to maintain continuous water movement.
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 less