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Question

The most abundant tissue seen in Hydrilla and eichhormia plants is__________

A
Aerenchyma
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B
Collenchyma
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C
Sclerenchyma
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D
Phloem
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Solution

The correct option is A Aerenchyma
  • 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. The channels of air-filled cavities provide a low-resistance internal pathway for the exchange of gases such as oxygen and ethylene between the plant above the water and the submerged tissues.
  • Aerenchyma is also widespread in aquatic and wetland plants which must grow in hypoxic soils. Hydrilla and Eichhornia are aquatic plants.

Therefore, the correct answer is option A.

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