state gov Kerala PSC Degree (Common Preliminary Examination) Mock Test Series 2025 General Knowledge Ecology and Environment Ecology and Functions of an ecosystem
Which of the following correctly explains the stability of a Biological Community?
1. It should not show a significant variation in productivity from year to year.
2. It must be either resistant or resilient to occasional disturbances.
3. It must be resistant to invasions by alien species.
Select the correct answer using the codes given below.
1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3