Which of the following pairs of tissues is resp... - WAEC Biology 1995 Question
Which of the following pairs of tissues is responsible for strengthening the plant?
A
Phloem and Epidermis
B
Parenchyma and Cambium
C
Collenchyma and Sclerenchyma
D
Collenchyma and Cambium
correct option: c
Collenchyma cells have thin primary walls with some areas of secondary thickening. Collenchyma provides extra mechanical and structural support, particularly in regions of new growth. Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to a plant.
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