The correct option is (c) 2 and 3 only.
Explanation
Natural vegetation refers to a plant community that has grown naturally without human aid and has been left undisturbed by humans for a long time. This is termed as "virgin vegetation." Based on origin, virgin vegetation is classified into endemic (indigenous) and exotic species.
Statement 1 is Incorrect:
Virgin vegetation which is purely Indian (native to the region) is known as endemic or indigenous species. The term "exotic" is used for species that are not native to the region.
Statement 2 is Correct:
Plants which have come from outside India are termed as exotic plants. These species are introduced to a region, either accidentally or intentionally, from a different geographical location.
Statement 3 is Correct:
Cultivated crops, fruits, and orchards form part of the general vegetation cover but are not considered virgin vegetation. This is because virgin vegetation (natural vegetation) is defined by its growth without human interference, whereas orchards are cultivated and managed by humans.
Key Takeaway:
Endemic species are purely native to a specific region, whereas exotic species are introduced from outside. Virgin vegetation strictly refers to plant communities that grow naturally without human intervention.