plz reply fast. which is the main mechanical tissue in aquatic plant hydrilla?
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Phloem is the main tissue and the mechanical tissue
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1. Root system of submerged plants is greatly reduced.
2. Root-hairs are absent and the aquatic roots usually possess root pockets (e.g., Eichornia speciosa).
3. The cuticle is either altogether absent (See fig. 2.2) or very poorly developed. This enables the root to absorb water directly through its surface.
4. The cortex is very well-developed and possesses large air spaces. Air present in the air spaces is used in respiration. Cells of the cortex are thin and parenchymatous.
2. Root-hairs are absent and the aquatic roots usually possess root pockets (e.g., Eichornia speciosa).
3. The cuticle is either altogether absent (See fig. 2.2) or very poorly developed. This enables the root to absorb water directly through its surface.
4. The cortex is very well-developed and possesses large air spaces. Air present in the air spaces is used in respiration. Cells of the cortex are thin and parenchymatous.
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