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A crustacean is an arthropod that has two or three body sections, five or more pairs of legs, and two pairs of antennae. Arachnids are arthropods with two body sections, four pairs of legs, and no antennae. Arachnids are arthropods with two body sections, four pairs of legs, and no antennae.
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What are four kinds if arthropod and how do there bodies differ?
Four kinds of arthropods include insects, arachnids, crustaceans, and myriapods. Insects have three body segments (head, thorax, abdomen) and usually possess wings and six legs. Arachnids, like spiders and scorpions, have two body segments (cephalothorax and abdomen) and eight legs. Crustaceans, such as crabs and lobsters, typically have a hard exoskeleton, two pairs of antennae, and varying numbers of legs, while myriapods, including centipedes and millipedes, have elongated bodies with many segments and numerous legs.
How do ticks differ from arachnids?
They are the same thing, but arachnids are a larger group.
What is centipped and milliped?
Centipedes and millipedes are both arthropods belonging to the classes Chilopoda and Diplopoda, respectively. Centipedes have elongated bodies with one pair of legs per body segment, making them fast predators that primarily feed on insects. In contrast, millipedes have cylindrical bodies with two pairs of legs per segment, and they are primarily detritivores, feeding on decaying organic matter. While both creatures can be found in similar environments, their behaviors and diets differ significantly.
How does the body plan of centipedes and millipedes differ from that of insects?
Insects' bodies are divided into three - head, thorax and abdomen and they have 6 legs. Millipedes have a differentiated head but their bodies comprise many identical segments eac with a pair of legs.
How do the three largest groups of arthropods differ?
The three largest are insects (six legs, almost all have wings), arachnids (eight legs, piercing fangs, front legs modified to pedipalps), and crustaceans (ten legs, mostly aquatic save for woodlice). ^^
What are the characteristics of an anthrpod?
Arthropods form the Phylum Arthropoda. Their characteristics include: Segmentation, in the sense of having heads, thoraxes and abdomens or cephalothoraxes and abdomens. Those that are mentioned are just the 'main' segments. Jointed legs. An exoskeleton. This is a hard covering, nonpermittive of growth as it is on the outside. Thus it must be shed periodically by ecdysis. Thus arthropods are part of the Ecdysozoa. Arthropods include millipedes and centipedes (Diplopoda and Chilopoda), insects (Insecta), arachnids (Arachnida) and crustaceans (Crustacea) and sea spiders (Pycnogonida). The mouthparts differ between the so called Chelicerata (includes arachnids and sea spiders) and the Mandibulata (includes insects and crustaceans and millipedes and centipedes). The mouthparts are, expectedly from the names, chelicerae and mandibles respectively. Note that not all six legged arthropods are insects. There are non-insect hexapods as well, such as springtails and silver fish and bristle tails. Crustaceans have 10 or more legs. Arachnids have 8. Millipedes have two pairs of legs per segment and centipedes have one pair of legs per segment. Phylogeny-wise it appears that insects (the only winged arthropods) are simply winged crustaceans i.e. insects are the most derived of the crustacean-insect clade.
How do you know something belongs to the crustaceans group of arthropods?
Crustaceans differ from other arthropods in that they have biramous (two-part) appendages and the nauplius larval form.
What makes crustaceans different from all other arthropods?
Arachnids differ from other arthropods in that they have no antenna (nor wings, like many insects). They also use book lungs to breathe, rather than the gills or spiracle/trachea configuration. They have a body plan of only two sections (tagmata) and eight legs, although often with a modified forward pair different from most other arthropods.
How do legs of insects and arachnids differ?
Insects have six legs, while arachnids possess eight. The legs of insects are typically segmented and adapted for various functions, such as walking, jumping, or swimming. In contrast, arachnids' legs are generally more robust and are primarily used for locomotion and capturing prey. Additionally, the structure and joint arrangement of the legs differ between these two groups, reflecting their distinct evolutionary adaptations.
Which characteristic would be important in classifying an animal as either an insect or an arachnid?
an important characteristic would be that arachnids only have 8 or more legs also they dont have wings. some arachnids are crad, spider ex.
How do the largest groups of arthropods differ?
Under the arthropoda phylum are subphyla Chelicerata, Myriapoda, Crustacea, and Hexapoda. There is also an extinct class Marrellomorpha and an the extinct Trilobite ("three lobes") subphylum. The chelicerata, like spiders, scorpions, mites, etc., get their name from having appendages appear before the mouth, unlike most other arthropods they have only two body sections, and neither wings nor antennae; myriapods like centipedes and millipedes characterized by a high count of body segments and legs; crustaceans like crabs, shrimp, woodlice the only ones with biramous (two-part) limbs, and a nauplius larval form; hexapoda (with the class Insecta, the insects) named for their consolidated thorax with only three pairs of legs.
Is a garden spider a inesct?
No, they are part of the Arachnid family. Many people think of spiders as insects, but actually they are classified in a separate category. Spiders are part of a group called arachnids, which also includes mites, ticks, and scorpions. Arachnids share many features with their arthropod cousins, but they differ in that they do not have antennae. Also, spiders have eight legs (insects have six), and their bodies are segmented into two parts (insects' bodies have three parts).
