Table of Contents
What is a unique feature of arthropods?
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).
Do all arthropods have six legs?
Insects have only six legs. Spiders, scorpions, mites, ticks, whip scorpions, and pseudoscorpions are all arachnids that can be found in Everglades National Park. Unlike insects, arachnids have eight legs and no antennae, and their body is divided into two main segments: a cephalothorax and abdomen.
Do all arthropods have wings?
All arthropods have jointed legs, claws, and body segments! Arthropods have segmented bodies. Each body segment usually has a pair of appendages. The appendages can be antennae, wings, legs, or mouthparts!
Which of the following characteristics do all insects exhibit?
Insects have a chitinous exoskeleton, a three-part body (head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms.
What are some of the characteristics of the arthropods?
An “arthropod” is an invertebrate animal that has an exoskeleton, a segmented body, and jointed appendages. The following families of organisms are all examples of arthropods: Insects such as ants, dragonflies, and bees. Arachnids such as spiders and scorpions.
How many species of arthropods are there in the world?
Arthropods account for 3 out 4 species of animal known to man. The biomass of arthropods far outweighs that of the vertebrate group of animals. Arthropods have several features in common. The main common feature is that they all have bilaterally symmetrical body shapes which are divided into segments.
What kind of arthropods live in the sea?
Euphausiids, or krill, are shrimplike marine arthropods that live in the open sea. The stings and bites of arthropods may be irritating or painful, but very few inject dangerous toxins.
Why do arthropods have the same symmetry as humans?
When the arthropod grows it must periodically shed the old exoskeleton and grow a new exoskeleton in a process called molting. Bilateral symmetry: All arthropods have bilateral symmetry. This means they look the same on both sides if a line was drawn down the middle. Humans have bilateral symmetry also.