Log in

WBCS Preliminary Examination 2022 — General Studies · Question 146 of 200

Q146
General ScienceBiology
Phytophthora palmivora is a
  1. a.Bio-pesticide
  2. b.Bio-insecticide
  3. c.Mycoherbicide
  4. d.First bioherbicide

Answer: (D) First bioherbicide

Phytophthora palmivora (strain 'Devine') was the world's first commercially registered bioherbicide, approved in the USA in 1981. It is a water mould used to control strangler vine (Morrenia odorata) in citrus orchards. A mycoherbicide uses fungi specifically, while this organism is an oomycete (water mould).