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During the discussion in class, Rohan gives a statement that, “A tissue is a group of similar cells performing similar functions”. But Rajiv counter argues that, “this is true in case of simple tissues but little different in case of complex tissues”. Provide your explanation in view of the discussion in class.
Simple tissues, such as parenchyma and collenchyma, consist of similar cells performing similar functions, so Rohan’s statement is correct for them. However, Rajiv is correct regarding complex tissues because they contain different kinds of cells working together for one common function. For exampleRead more
Simple tissues, such as parenchyma and collenchyma, consist of similar cells performing similar functions, so Rohan’s statement is correct for them. However, Rajiv is correct regarding complex tissues because they contain different kinds of cells working together for one common function. For example, xylem contains vessels, tracheids and fibres, while phloem contains sieve tubes and companion cells.
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 lessA plant cell and an animal cell are of the same size. (i) Which cell will have a larger vacuole? Give reasons. (ii) What assumptions are you making to answer the question above?
(i) A plant cell generally has a larger central vacuole than an animal cell. The vacuole stores cell sap, maintains turgor pressure and supports rigidity in plants. Animal cells usually contain smaller vacuoles. (ii) This answer assumes that both cells are mature, healthy and functioning normally. IRead more
(i) A plant cell generally has a larger central vacuole than an animal cell. The vacuole stores cell sap, maintains turgor pressure and supports rigidity in plants. Animal cells usually contain smaller vacuoles.
(ii) This answer assumes that both cells are mature, healthy and functioning normally. It also assumes they belong to typical plant and animal tissues under ordinary environmental conditions.
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 lessA textbook states, “Each plant tissue performs only one specific function”. What questions would you ask to critically examine the correctness of this statement? What examples of tissues would you take to find out the answers to these questions?
To examine the statement critically, I would ask whether some plant tissues perform more than one function. I would study examples like parenchyma, which stores food and carries out photosynthesis, epidermis, which protects and reduces water loss and xylem, which transports water and also provides mRead more
To examine the statement critically, I would ask whether some plant tissues perform more than one function. I would study examples like parenchyma, which stores food and carries out photosynthesis, epidermis, which protects and reduces water loss and xylem, which transports water and also provides mechanical support. These examples show that many tissues perform multiple functions simultaneously.
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 lessVisit a doctor and find out what happens in ligament rupture, cartilage rupture and fracture of bones. How can we reduce the risk by changing our lifestyle and nutritional balance?
Ligament rupture weakens joint stability, cartilage rupture damages cushioning between bones and fractures break bone structure, causing pain and movement difficulty. Risk can be reduced through regular exercise, yoga, correct posture and maintaining healthy body weight. A balanced diet rich in calcRead more
Ligament rupture weakens joint stability, cartilage rupture damages cushioning between bones and fractures break bone structure, causing pain and movement difficulty. Risk can be reduced through regular exercise, yoga, correct posture and maintaining healthy body weight. A balanced diet rich in calcium, protein, phosphorus and vitamin D strengthens bones, muscles and joints, helping prevent injuries and skeletal disorders.
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 lessWill it be possible to obtain a complete animal from an animal cell like plants? If yes, what would be the advantages and challenges of this development?
Obtaining a complete animal from a single animal cell may be possible through cloning and stem cell techniques, as seen in Dolly the sheep. Advantages include medical research organ regeneration and preservation of endangered species. However, challenges include ethical concerns, genetic defects, loRead more
Obtaining a complete animal from a single animal cell may be possible through cloning and stem cell techniques, as seen in Dolly the sheep. Advantages include medical research organ regeneration and preservation of endangered species. However, challenges include ethical concerns, genetic defects, low success rates, expensive procedures and possible misuse of biotechnology, especially in humans and complex animal systems.
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