What is a arthropod easy definition?
Definition of arthropod : any of a phylum (Arthropoda) of invertebrate animals (such as insects, arachnids, and crustaceans) that have a segmented body and jointed appendages, a usually chitinous exoskeleton molted at intervals, and a dorsal anterior brain connected to a ventral chain of ganglia.
What word best describes an arthropod?
The definition of arthropod is an animal without a back bone, with six or more jointed legs, a segmented body and a supporting structure on the outside. An example of arthropod is a scorpion. An invertebrate animal of the phylum Arthropoda, characterized by a chitinous exoskeleton and multiple jointed appendages.
What does arthropod mean literally?
those with jointed feet
The Modern Latin root is Arthropoda, which is also the name of the animals’ phylum, and which means “those with jointed feet.”
What is the defining characteristic of an arthropod?
The distinguishing feature of arthropods is the presence of a jointed skeletal covering composed of chitin (a complex sugar) bound to protein. This nonliving exoskeleton is secreted by the underlying epidermis (which corresponds to the skin of other animals).
What are arthropods kids definition?
Arthropods are animals that have a hard outside covering called an exoskeleton. Scientists have identified more than a million different types of arthropod, and there may be many more. Insects, crustaceans, and arachnids are three of the largest arthropod groups. Arachnids include spiders and mites.
What is arthropod Mcq?
The name Arthropoda was coined by Von Siebold and the Arthropoda word is derived from Greek work. Arthro means jointed and pod means appendages. This is the largest phylum in the animal kingdom. They show heteronomous metamerism and have chitinous exoskeleton. Arthropods found in all types of habitats.
What does the term Cnidaria mean?
: a phylum of more or less radially symmetrical invertebrate animals that lack a true body cavity, possess tentacles studded with nematocysts, and include the hydroids, jellyfishes, sea anemones, and corals.
What are the characteristics of an arachnid?
Arachnids have the following characteristics:
- Four pairs of legs (eight total).
- Arachnids also have two additional pairs of appendages.
- Arachnids do not have antennae or wings.
- The arachnid body is organized into the cephalothorax, a fusion of the head and thorax, and the abdomen.
What are the 4 main characteristics of arthropods?
The important characteristics of arthropoda include:
- They possess an exoskeleton.
- They have jointed appendages.
- Their body is segmented.
- They are bilaterally symmetrical.
- They possess an open circulatory system.