Pneumatophores occur in (1) Carnivorous plants (2) Free-floating hydrophytes (3) Halophytes (4) Submerged hydrophytes

Answer: (3)

Pneumatophores are respiratory roots which are found in halophytes such as mangroves. Halophytes grow in saline swamps, hence breathing roots come out of the water and take oxygen for breath. It also gives off excess CO2. It happens through tiny pores, called lenticels. Carnivorous plants, free-floating hydrophytes and hydrophytes submerged do not have pneumatic tophores.

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