Pneumatophores show

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(B) Pneumatophores are specialized respiratory roots found in plants like $Rhizophora$ that grow in swampy areas.These roots grow vertically upwards,i

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Negative geotropism (ageotropism)

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(B) Pneumatophores are specialized respiratory roots found in plants like $Rhizophora$ that grow in swampy areas.These roots grow vertically upwards,i.e.,against the direction of gravity,to obtain oxygen for respiration.Since they grow away from the pull of gravity,they exhibit negative geotropism (also known as ageotropism).

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