Kaplan Nursing Entrance Practice Exam

Which group of animals is known for consuming both plant and animal material?

1. Carnivores

2. Herbivores

3. Omnivores

4. Detritivores

The correct answer is: Omnivores

Omnivores are unique in that they have the ability to consume and thrive on a diet that includes both plant and animal materials. This adaptability allows them to exploit a wider range of food sources compared to those that specialize in either plants or animals. By being able to eat fruits, vegetables, grains, and also meat and fish, omnivores can occupy various ecological niches and are often more resilient to changes in their environment because their diet isn't limited to one food source. This versatility in diet is critical for survival, allowing omnivores to take advantage of what is available in their habitats, whether it's during times of abundance or scarcity. This characteristic sets them apart from other groups such as carnivores, which only eat meat, and herbivores, which strictly consume plants. Detritivores, on the other hand, feed on decomposing organic matter, which is another distinct dietary preference. Overall, the omnivorous diet plays a significant role in the ecological balance, contributing to various food webs and nutrient cycles.