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Question
Which plant tissue provides both mechanical strength as well as flexibility?
Which plant tissue provides both mechanical strength as well as flexibility?
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Solution
The correct option is A Collenchyma
- Parenchyma cells have thin primary walls and usually remain alive after they become mature. Parenchyma forms the "filler" tissue in the soft parts of plants. Collenchyma cells have thin primary walls with some areas of secondary thickening.
- Collenchyma provides extra structural support, particularly in regions of new growth. Collenchyma cells have walls which during their development and extension are mainly cellulosic. They grow with the surrounding tissue as it expands or lengthens.
- They are more flexible than fibers, and if they remain non lignified, as they might in association with leaf veins or midribs, or in leaf stalks (petioles), they allow for a high degree of flexibility in the organ itself.
- Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to a plant. Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems, and roots of some plants, which allows the exchange of gases between the shoot and the root.
Therefore, the correct answer is option C.
- Parenchyma cells have thin primary walls and usually remain alive after they become mature. Parenchyma forms the "filler" tissue in the soft parts of plants. Collenchyma cells have thin primary walls with some areas of secondary thickening.
- Collenchyma provides extra structural support, particularly in regions of new growth. Collenchyma cells have walls which during their development and extension are mainly cellulosic. They grow with the surrounding tissue as it expands or lengthens.
- They are more flexible than fibers, and if they remain non lignified, as they might in association with leaf veins or midribs, or in leaf stalks (petioles), they allow for a high degree of flexibility in the organ itself.
- Sclerenchyma cells have thick lignified secondary walls and often die when mature. Sclerenchyma provides the main structural support to a plant. Aerenchyma is a spongy tissue that forms spaces or air channels in the leaves, stems, and roots of some plants, which allows the exchange of gases between the shoot and the root.
Therefore, the correct answer is option C.
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