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Aamrapali observed that a young mango sapling’s stem bends flexibly during monsoon winds and does not break. Which tissue is responsible for this flexibility? Predict and provide your explanation of the impact if the existing tissue was replaced by sclerenchyma.
The flexibility of the young mango sapling’s stem is due to collenchyma tissue, which has unevenly thickened walls containing pectin. This tissue provides support with flexibility, helping the stem bend during strong winds without damage. If sclerenchyma replaced collenchyma, the stem would become hRead more
The flexibility of the young mango sapling’s stem is due to collenchyma tissue, which has unevenly thickened walls containing pectin. This tissue provides support with flexibility, helping the stem bend during strong winds without damage. If sclerenchyma replaced collenchyma, the stem would become hard, rigid and brittle because sclerenchyma has thick lignified walls, making the sapling more likely to break.
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 lessWhich function of the tree would be hampered if the tissues beneath the bark were severely damaged?
The major function hampered would be the transportation of food materials within the plant. Phloem tissues beneath the bark carry sugars and nutrients from leaves to roots and other organs. Severe damage disrupts this transport system, causing starvation of roots and other tissues. This weakens growRead more
The major function hampered would be the transportation of food materials within the plant. Phloem tissues beneath the bark carry sugars and nutrients from leaves to roots and other organs. Severe damage disrupts this transport system, causing starvation of roots and other tissues. This weakens growth, reduces energy supply and may eventually kill the tree.
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 lessWhat assumptions are you making to answer the questions above? How would the answer change if your assumptions are also changed?
The answers assume that debarking mainly damaged bark and phloem tissues while xylem remained mostly unaffected. Under this assumption, food transport is disturbed more than water transport. If assumptions change and deeper tissues like xylem are also damaged, water transport and support would failRead more
The answers assume that debarking mainly damaged bark and phloem tissues while xylem remained mostly unaffected. Under this assumption, food transport is disturbed more than water transport. If assumptions change and deeper tissues like xylem are also damaged, water transport and support would fail too. Partial debarking may cause only limited effects, allowing the tree to survive longer.
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 lessVibha claims to her friend Neha that, “Meristematic cells are located only at the root and shoot apices”. What do you think about this statement? What question can Neha ask Vibha to help her understand further if the statement is incorrect?
Vibha’s statement is incorrect because meristematic tissues are not limited only to root and shoot apices. Plants also have lateral meristem for increasing girth and intercalary meristem for regrowth after cutting. Neha can ask Vibha how grasses regrow after mowing or how tree stems become thicker iRead more
Vibha’s statement is incorrect because meristematic tissues are not limited only to root and shoot apices. Plants also have lateral meristem for increasing girth and intercalary meristem for regrowth after cutting. Neha can ask Vibha how grasses regrow after mowing or how tree stems become thicker if meristematic tissues are present only at apical regions of 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 lessDuring 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 less