Fruit of Heritiera is dispersed by water as it has

Spongy thalamus

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Air cavity

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Fibrous mesocarp

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Spongy pericarp

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Solution

The correct option is A Spongy thalamus
Parachute mechanism is method of dispersal of seeds by the parachute-like pappus, Datura etc shows Censor mechanism which is common method of dispersal in the nuciferd is hydrophyte so dispersal of seeds occurs by water or hydrochory. In lotus fruits, the etaerio of achenes is embedded in spongy thalamus.
So the correct answer is 'Spongy thalamus'.

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