Question

What are respiratory roots (or)Breathing roots?

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Answer 1

Answer:

Pneumatophores or breathing roots are respiratory roots found in halophytes such as mangroves. They often grow in saline swamps, so breathing roots come out of the water to consume oxygen. A lot of carbon dioxide is also given out. This happens through small pores known as lenticels.

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Answer 2

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• Avicennia is a tree which grows in mangroves or swamps.

• They have roots which are seen above the ground for the purpose of gaseous exchange.

• These roots are erect, peg like structures with numerous pores through which air circulates.

• These roots are called breathing roots or pneumatophores.

NOTES:

»» Vanda is an epiphytic plant, which grows on trees.

»» The velamen tissue present in the epiphytic root absorbs moisture to perform photosynthesis.