Question

Which of the following is not a cause of biodiversity loss?

• A. Fragmentation
• B. Over-exploitation
• C. Co-evolution
• D. Alien species invasion

Answer 1

The Correct Option is C

Let's evaluate each option regarding its role in biodiversity loss:

(1) Fragmentation: Habitat fragmentation occurs when large habitats are broken into smaller, isolated patches. This leads to a loss of biodiversity by reducing available habitats and isolating populations, making it harder for species to survive and reproduce. Fragmentation is a major cause of biodiversity loss.

(2) Over-exploitation: Over-exploitation refers to the excessive harvesting or hunting of species, often faster than they can reproduce. This can lead to population declines and even extinction. It is a well-known cause of biodiversity loss.

(3) Co-evolution: Co-evolution refers to the process where two or more species influence each other's evolutionary paths, typically leading to mutual benefits. This process does not cause biodiversity loss. In fact, it often leads to the development of beneficial interactions between species, contributing to the stability of ecosystems.

(4) Alien species invasion: The introduction of alien or invasive species to new habitats can disrupt ecosystems and outcompete native species, leading to a loss of biodiversity. This is a significant cause of biodiversity loss.

Thus, the correct answer is (3) Co-evolution, as it is a natural process that generally promotes biodiversity rather than causing its loss.

Answer 2

Co-evolution, where species mutually adapt over time, does not lead to biodiversity loss. Fragmentation, over-exploitation, and alien species invasion are significant causes of biodiversity loss due to habitat destruction, resource depletion, and ecosystem disruption.