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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 primary structure of protein is made by
- Which of the following elements is responsible for maintaining turgor in cells
- Minamata disease first occurred in
- The ship in which Charles Darwin travelled was
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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
- The primary structure of protein is made by
- Which of the following elements is responsible for maintaining turgor in cells
- Minamata disease first occurred in
- The ship in which Charles Darwin travelled was
- Vegetative propagation by leaves occurs 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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