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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: - Ascaris is characterized by
- Which one of the following is not an essential mineral element for plants
- The process by which organisms with different evolutionary history evolve similar
- In majority of angiosperms
- Select the correct match of the digested products in humans given in column-I
Topics: Enhancement in Food Production
(101)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Ascaris is characterized by
- Which one of the following is not an essential mineral element for plants
- The process by which organisms with different evolutionary history evolve similar
- In majority of angiosperms
- Select the correct match of the digested products in humans given in column-I
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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