What is one key characteristic of the lifecycle of ticks?

The key characteristic of the lifecycle of ticks is that they must consume a blood meal at certain stages of their development, particularly when transitioning from larva to nymph and from nymph to adult. This blood meal is essential not only for their growth but also for reproduction. Ticks rely on the nutrients found in the blood to facilitate the energy required for molting, which enables them to progress through their lifecycle stages.

While it may seem necessary for ticks to feed at every stage, it is essential to understand that certain developmental stages do not require a blood meal, such as the larval stage after it has emerged. Understanding the intricate lifecycle of ticks helps in controlling their populations more effectively, as interventions can be timed with their feeding behaviors. Other options presented do not accurately reflect the lifecycle characteristics or feeding requirements of ticks. For instance, ticks do not primarily live in water, nor do they reproduce without a host, as they need the interaction with host animals for reproduction and successful lifecycle completion.