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Organisms and Populations — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations1 Mark
MCQ
A total root parasite is:
  • A
    Dendrophthoe
  • B
    Orobanche
  • C
    Viscum
  • D
    Santalum
✓

Answer

  1. Orobanche

Explanation:

Most of the plants are autotrophic. However some plants are heterotrophs and obtain their nutrition as parasites and saprotrophs. Some of the parasitic plants are Rafflesia (total root parasite), Cuscuta (total stem parasite), Viscum (partial stem parasite), Loranthus (partial stem parasite), Striga (partial root parasite), Balanophora (total root parasite), Orobanche (total root parasite) etc. Orobanche is a leafless parasite growing in the roots of plants like brinjal, potato and mustard.

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