SSC GD 2025 PYQ — Question 40

The correct answer is Option 4 i.e. A close and long-term interaction between different species.

In ecology, symbiosis refers to a close and long-term interaction between different species. These interactions can be mutualistic (both species benefit, like bees and flowers), commensalistic (one benefits while the other is unaffected, like barnacles on whales), or parasitic (one benefits at the expense of the other, like ticks on animals). Symbiosis plays a vital role in maintaining ecological balance, supporting survival, and influencing the evolution of species by fostering interdependence within ecosystems across different habitats.