All of the following are true regarding the adaptations seen in Vallisneria except:

It's roots are small in size.

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It's root system is deep-rooted and extensive.

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It's stem is hollow and light.

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It's leaves are thin, elongated, and ribbon-like.

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Solution

The correct option is B
It's root system is deep-rooted and extensive.

Vallisneria is a submerged aquatic plant. It's roots are small in size. The stem is hollow and light. The leaves are thin, elongated, ribbon-like so more surface area can be exposed to the light entering the water body for photosynthesis.

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