predator
Definition
A predator is an organism that hunts and eats other organisms for food. Predators are an important part of the food chain, and they help to keep populations of prey organisms in check.
Predators have a variety of adaptations that help them to hunt and kill their prey. These adaptations can include sharp claws, teeth, and jaws; keen senses of sight, smell, and hearing; and speed and agility.
Predators also have a variety of strategies for hunting their prey. Some predators stalk their prey, while others chase it down. Some predators ambush their prey, while others lure it into a trap.
The success of a predator depends on a number of factors, including the size and speed of its prey, the availability of food, and the presence of other predators.
How can the word be used?
The shark is a marine predator.
Different forms of the word
Noun: an animal that hunts and kills other animals for food.
Adjective: relating to or characteristic of a predator.
Etymology
The word "predator" comes from the Latin word "praedātor", which means "plunderer".
The first recorded use of the word "predator" in English was in the 17th century.
Question
What is a predator?
AQA Science Exam Question and Answer
Question:
Define a predator and explain its role in ecosystems. Provide examples of predator-prey relationships and discuss how these interactions impact population dynamics.
Answer:
A predator is an organism that hunts, kills, and consumes other organisms, known as prey, for sustenance. Predators play a crucial role in maintaining the balance and health of ecosystems by controlling prey populations and influencing species interactions.
Examples of predator-prey relationships are abundant in nature. The relationship between a lion (predator) and a zebra (prey) in the African savannah is a classic example. Wolves hunting deer and hawks preying on mice are other instances of predator-prey dynamics.
These interactions have significant effects on population dynamics. When predator populations increase, prey populations may decrease due to higher predation rates. As prey populations decline, predator populations may subsequently decrease due to reduced food availability. This creates a cyclic pattern known as the predator-prey cycle.
Predators prevent prey populations from overpopulating, which can lead to resource depletion and negative impacts on ecosystems. They also exert evolutionary pressure on prey species, promoting adaptations that enhance survival, such as increased speed or camouflage.
Understanding predator-prey relationships is vital for comprehending the complexity of ecosystems. These interactions shape biodiversity, influence energy flow, and demonstrate the interconnectedness of species within ecosystems.