Question

Introduction of alien species into new area poses a threat to extinction of indigenous species due to
A) Their high nutrient requirement
B) Their symbiotic relationship
C) Absence of their natural predators
D) More intraspecific competition

Answer 1

Hint: When a particular species is introduced into the new area, then it can cause a great damage to the species residing already over there. The only factor which can stop them for creating a major destruction is their predators residing in that area.

Complete Answer:
- The species that have been acquainted from another geographic district with a territory outside its common range are called alien species. They have been imported or have come here inadvertently, as 'stowaways' hitching a ride on board a boat or vehicle.
- Outsider species regularly have no common adversaries here, which is the reason their numbers can become rapidly.

There are 3 primary procedures for controlling invasive alien species:
1) Forestalling their presentation in any case. There is an European restriction on deliberately continuing, reproducing, developing, moving, putting available and bringing in intrusive outsider plants and creatures.
2) At the point when invasive alien species are presented inadvertently, the creatures must be taken out from nature as fast as could be expected under the circumstances. Plants must be crushed.
3) On the off chance that obtrusive outsider populaces are so huge they can never again be gotten or killed, measures must be taken to prevent them from spreading further.

So, the correct answer is option C.

Note: Invasive alien species are a significant danger to biodiversity and biological systems around the globe. International agreements have been made on controlling these species.