Question

Write a short note on parasitic plants.

Answer 1

Answer:

A parasitic plant is a plant that derives some or all of its nutritional requirement from another living plant. They make up about 1% of angiosperms and are found in almost every biome. All parasitic plants have modified roots, called haustoria, which penetrate the host plant, connecting them to the conductive system – either the xylem, the phloem, or both. For example, plants like Striga or Rhinanthus connect only to the xylem, via xylem bridges (xylem-feeding). Alternately, plants like Cuscuta and Orobanche connect only to the phloem of the host (phloem-feeding).[1][2] This provides them with the ability to extract water and nutrients from the host. Parasitic plants are classified depending as to the location where the parasitic plant latches onto the host and the amount of nutrients it requires.[3] Some parasitic plants are able to locate their host plants by detecting chemicals in the air or soil given off by host shoots or roots, respectively. About 4,500 species of parasitic plant in approximately 20 families of flowering plants are known.[4][3

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Answer 2

Parasitic plant is a plant that derives some or all of it's nutritional requirement from another living plant . All parasitic plants have modified roots called Haustoria which penetrate the host plant connecting them to the conductive system either the xylem , the phloem or both . There are over 4,000 species of parasitic flowering plants in the world . Many parasitic plants are totally dependent on their host for food and no longer need green leaves Others still have green leaves and make some of their own food through photosynthesis.examples of these parasitic plants are yellow rattle , Viscum album , stinking corpse lily, etc .....