Question

Insects constitute the largest animal group on earth. About 25-30% of the insect species ate known to be herbivores. In spite of such huge herbivore pressure, globally, green plants have persistence. One possible reason for this persistence is:

• A. Food preference of insects has tended to change with time
• B. Herbivore insects have become inefficient feeders of green plants
• C. Herbivore population has been kept in control by predators
• D. Decline in reproduction of herbivores with time

Answer 1

The correct option is C Herbivore population has been kept in control by predators

About 25-30% of the insect population is known to be herbivore but still the green plants are persistent. The reason is that the population of the herbivorous insects is maintained constant by the predators. This prevents the complete utilization of the plants by the insects for food.

Thus, the correct answer is option C.