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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: - Which of the following diseases is caused by a protozoan ?
- Photphosphorylation is
- The arrangement of megaspores in a tetrad in an angiosperm is
- Which is the following causes an increase in sodium reabsorption
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Topics: Enhancement in Food Production
(101)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which of the following diseases is caused by a protozoan ?
- Photphosphorylation is
- The arrangement of megaspores in a tetrad in an angiosperm is
- Which is the following causes an increase in sodium reabsorption
- Bundle sheath cells are found in
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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