Which of the following statements is true regarding aphids?

Aphids are known for their unique reproductive strategies, which include both sexual and asexual reproduction. This versatility allows them to thrive in various environments. During favorable conditions, aphids can reproduce asexually through a process called parthenogenesis, where females give birth to live young without mating. However, they can also reproduce sexually when environmental conditions become less favorable, leading to the production of eggs that can survive harsher conditions. This dual capacity for reproduction enables aphids to adapt quickly to changing environments and population pressures.

The other statements do not accurately reflect the biology of aphids. For instance, while aphids are often found in warm climates, they are not exclusive to these areas, as they can also survive in temperate regions. Additionally, it is incorrect to say they have no natural predators; aphids are preyed upon by a variety of insects, including ladybugs and lacewings, making them part of a natural predator-prey dynamic in ecosystems. The ability for both sexual and asexual reproduction is essential for their survival and proliferation, confirming that the accurate statement regarding aphids is indeed that they can reproduce both sexually and asexually.