Assertion : Mammals and birds requiring large territories are severely affected when large continuous habitats are broken up into smaller fragments. Reason : Habitat loss and fragmentation is the most important cause driving animals and plants to extinction.

Step-by-step solution

The assertion states that mammals and birds requiring large territories are severely affected by habitat fragmentation. This is true because these animals need extensive areas for foraging, breeding, and survival, and breaking their habitat into smaller fragments restricts their movement and reduces available resources. The reason states that habitat loss and fragmentation is the most important cause driving animals and plants to extinction. This is also a true statement, as it is the primary factor among the 'Evil