What Are Some of the Characteristics of Arthropods?
Arthropods are the most diverse group of animals on the planet, with over 1 million known species. They include insects, arachnids, crustaceans, and myriapods. Arthropods are invertebrates, meaning they do not have a backbone. They have a segmented body, jointed appendages, and an external skeleton made of chitin.
Segmented body: The arthropod body is divided into segments, which are joined by flexible joints. This allows for a wide range of movement.
Jointed appendages: Arthropods have jointed appendages, which are used for a variety of purposes, including walking, swimming, eating, and reproduction.
External skeleton: Arthropods have an external skeleton made of chitin, which is a hard, durable material. This skeleton protects the arthropod's body and provides support for its muscles.
Other characteristics of arthropods include:
- Open circulatory system: Arthropods have an open circulatory system, meaning that their blood is not contained within blood vessels.
- Compound eyes: Many arthropods have compound eyes, which are made up of many small lenses. This gives them a wide field of vision.
- Sensory hairs: Arthropods have sensory hairs on their body, which they use to detect changes in their environment.
Related Questions and Answers:
- What are the four main groups of arthropods? Insects, arachnids, crustaceans, and myriapods.
- What is the function of the arthropod's external skeleton? Protection and support for the body.
- What type of circulatory system do arthropods have? Open circulatory system.
- What type of eyes do many arthropods have? Compound eyes.
- What do arthropods use to detect changes in their environment? Sensory hairs.
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