USTET Science Practice Test 2025 – The Complete All-in-One Guide for Exam Success!

Collenchyma cells play a vital role in providing support to plants, which is particularly important in young, growing tissues. These cells have unevenly thickened primary cell walls, allowing them to remain flexible while still providing structural integrity to support the stems and leaves. This flexibility is crucial because it enables the plant to withstand bending or being swayed by wind without breaking.

Collenchyma is commonly found in areas of growth in the plant, such as the stems and petioles of leaves. Unlike other supportive tissues, such as sclerenchyma, collenchyma cells can expand as the plant grows, making them essential for young plants that are still developing. In addition to support, the ability of collenchyma cells to allow movement without losing strength contributes to the overall resilience of the plant.

The other functions mentioned—nutrient storage, photosynthesis, and water absorption—are carried out by different cell types in plants, such as parenchyma for storage, chlorenchyma for photosynthesis, and root cells for water uptake. Therefore, the specific structure and mechanical properties of collenchyma cells make them ideal for providing support and enhancing the plant's resistance to wind and mechanical stresses.