Penis
There are six segments on the abdomen of a crayfish
A crayfish has segments, which are sections of a body that are separated by a crease, so it might be determined as segmented because it has only two so it may be classified but it might not. Worms have many segments.
As opposed to earthworms, arthropods (crayfish) segments often become fused. Therefore, certain parts of a crayfish that looks like one piece, was once multiple pieces before they became fused together, so some segments were actually once more than just that one segment. An earthworm on the other hand, is just as many segments as are seen, and always has been.
Arachnids have two body segments, the abdomen and......
Arachnids have two body segments, the abdomen and......
Harvestman have 3 body segments
How many body segments compose the thorax of a grasshopper?
12
A crayfish has six tail joints, collectively known as the abdomen. These segments, or somites, are often referred to as the pleon and are flexible, allowing the crayfish to swim by flexing and extending its tail. Each segment contributes to the overall structure and movement of the crayfish.
A hornet have 18 body segments (excuding appendages segmentations).
Flies have 3 body segments: the head, thorax, and abdomen.
As opposed to earthworms, arthropods (crayfish) segments often become fused. Therefore, certain parts of a crayfish that looks like one piece, was once multiple pieces before they became fused together, so some segments were actually once more than just that one segment. An earthworm on the other hand, is just as many segments as are seen, and always has been.