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In India, the spread of Opuntia was controlled by
Options
(a) introducing insects
(b) spraying D.D.T.
(c) letting loose cattles
(d) growing trees
Correct Answer:
introducing insects
Explanation:
The control of pests by biological (rather than chemical) means is achieved by breeding disease-resistant crops or by introducing a natural enemy of the pest, such as a parasite or predator, e.g. control of the prickly pear cactus (Opuntia) was done by introducing the cactus moth (Cactoblastis, Cactorum) whose caterpillars feed on the growing shoots of the plants.
Related Questions: - The possible blood groups of children born to parents having A and AB groups are
- A characteristic fruit,found in members of family Poaceae in which pericarp
- HCl is secreted by
- Sweet potato is homologous to
- A large proportion of oxygen is left unused in the human blood
Topics: Enhancement in Food Production
(101)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The possible blood groups of children born to parents having A and AB groups are
- A characteristic fruit,found in members of family Poaceae in which pericarp
- HCl is secreted by
- Sweet potato is homologous to
- A large proportion of oxygen is left unused in the human blood
Topics: Enhancement in Food Production (101)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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