Question:
Find the correct combination
Find the correct combination
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Sclerenchyma = lignified dead support tissue, Parenchyma (hydrophytes) = aerenchyma for buoyancy.
Updated On: Jul 18, 2026
- I, II, III, IV
- II, IV
- III, IV
- I, II, IV
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The Correct Option is B
Solution and Explanation
Step 1: Understanding plant tissue collenchyma.
Collenchyma is a living mechanical tissue present in young dicot and monocot aerial parts. It provides flexible support due to uneven cellulose, hemicellulose, and pectin thickening in cell walls.
Step 2: Understanding sclerenchyma structure and function.
Sclerenchyma consists of dead cells with heavily lignified walls. Its main function is to provide rigid mechanical support to mature plant parts, making tissues strong and resistant to bending.
Step 3: Understanding xylem vessels.
Xylem vessels are composed of multicellular dead cells arranged longitudinally. They mainly conduct water and minerals from roots to aerial parts and also contribute to mechanical strength of the plant.
Step 4: Understanding parenchyma in hydrophytes.
Parenchyma is a simple living tissue that can store air in aquatic plants (aerenchyma). It helps in buoyancy and facilitates gaseous exchange in hydrophytic conditions.
Step 5: Matching analysis of pairs.
Collenchyma and sclerenchyma descriptions must match their structural and functional roles. Sclerenchyma matches lignin and mechanical support, while parenchyma in hydrophytes matches air storage and buoyancy functions.
Step 6: Final conclusion.
Thus, only II and IV combinations correctly match their respective characteristics.
Collenchyma is a living mechanical tissue present in young dicot and monocot aerial parts. It provides flexible support due to uneven cellulose, hemicellulose, and pectin thickening in cell walls.
Step 2: Understanding sclerenchyma structure and function.
Sclerenchyma consists of dead cells with heavily lignified walls. Its main function is to provide rigid mechanical support to mature plant parts, making tissues strong and resistant to bending.
Step 3: Understanding xylem vessels.
Xylem vessels are composed of multicellular dead cells arranged longitudinally. They mainly conduct water and minerals from roots to aerial parts and also contribute to mechanical strength of the plant.
Step 4: Understanding parenchyma in hydrophytes.
Parenchyma is a simple living tissue that can store air in aquatic plants (aerenchyma). It helps in buoyancy and facilitates gaseous exchange in hydrophytic conditions.
Step 5: Matching analysis of pairs.
Collenchyma and sclerenchyma descriptions must match their structural and functional roles. Sclerenchyma matches lignin and mechanical support, while parenchyma in hydrophytes matches air storage and buoyancy functions.
Step 6: Final conclusion.
Thus, only II and IV combinations correctly match their respective characteristics.
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