The correct option is (ii) phloem. Phloem transports food prepared in leaves to roots and other plant parts. Malfunctioning phloem disrupts movement of sugars and nutrients, affecting growth, storage and normal metabolic activities in plants.
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A. (iii) Assertion true, Reason false. B. (i) Both true, Reason explains Assertion. C. (iv) Assertion false, Reason true. D. (iii) Assertion true, Reason false. These answers depend on tissue structure, muscle function and joint movement characteristics.
As the number of annual rings increases, the diameter of the teak tree also increases. Annual rings form each year due to lateral meristem activity, showing that tree girth grows gradually with age and environmental conditions.
The answers assume that debarking damaged bark and phloem significantly but xylem remained functional. If assumptions change, such as deeper xylem damage or partial bark removal, water transport, survival and overall effects on the tree would differ.
Collenchyma tissue provides flexibility to the young mango stem, allowing it to bend without breaking. If replaced by sclerenchyma, the stem would become hard and rigid, reducing flexibility and increasing chances of breaking during strong monsoon winds.