In India, the spread of Opuntia was controlled by

⇦

⇨

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:

1. Function of companion cells is
2. The triceps and biceps muscles are of
3. The golden age of Dinosaurs was during which of the following era?
4. Radial symmetry occurs in
5. Which of the following is the most dangerous metal pollutant of automobile exhause

Topics: Enhancement in Food Production (101)
Subject: Biology (4253)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends