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EzraThe answer to this is probably a little more complicated than you may expect.
The egg hatches into a larva which, like the worm-like ancestors of insects, has 19 body segments. Each segment has the potential to produce two appendages. After the pupa is fully grown it pupates, during which time it changes into the adult form. In this metamorphosis the segments change their shape and some fuse together, and some grow their appendages.
The first six segments form the head and fuse together fully. The appendages form the mouth parts and the antennae.
The next three segments fuse and form the thorax and the appendages are the three pairs of legs. The next segment forms the petiole -- the narrow waist between throax and abdomen -- and is fused to the thorax.
The remaining nine segments form the abdomen, and the appendages of the eighth and ninth segments form the components of the sting in females, and the claspers in males (males have no sting). However, you only see seven of the nine segments because segments eight and nine are much reduced in size and are telescoped inside the seventh abdominal segment.
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How many parts does a worm have?
A worm's body is typically divided into segments, which can vary depending on the species. Some worms have an elongated body with multiple segments, while others may have fewer distinct segments.
How many segments do spiders have?
Spiders have two main body segments: the cephalothorax (head and thorax combined) and the abdomen. The cephalothorax contains the spider's eyes, mouthparts, and legs, while the abdomen houses the spider's internal organs.
How many main body parts do centipedes have?
insects have 3 segments or "parts" as you called them; the head the thorax which is in sense to the human body the chest and the abdomen which is the butt of the insect
How many body parts do centipedes have?
Centipedes have many body segments, usually between 15 and 177, each with a pair of legs. These segments make up the majority of their body along with the head and tail.
How many body segments do arthropods have?
Arthropods typically have three main body segments: head, thorax, and abdomen. These segments may be fused or specialized for various functions depending on the species of arthropod.
