WebCephalization is an evolutionary trend in which, over many generations, the mouth, sense organs, and nerve ganglia become concentrated at the front end of an animal, producing a head region. This is associated with movement and bilateral symmetry, such that the animal has a definite head end. WebAnswer: Phylum Platyhelminthes includes triploblastic, acoelomate, bilaterally symmetrical and dorsoventrally compressed flatworms. Phylum Platyhelminthes has following characteristic features: (1) Free-living, …
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Web7 jan. 2024 · Earthworms have bilateral symmetry. This means that if you cut the earthworm down the centerline, the left side of the body would be identical to the right … WebEarthworms have bilateral symmetry. This means that if you cut the earthworm down the centerline, the left side of the body would be identical to the right side. PROSTOMIUM Some species of earthworms have a tongue-like lobe above the mouth called prostomium. The prostomium is actually a sensory device. Earthworms do not have a nose, eyes, ears, busy bee soul food atlanta georgia
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WebQ. Which phylum of worms has a bilateral symmetry, one-way digestive system, respiration through skin, hydrostatic skeleton and segmented body? answer choices Annelida Platyhelminthes Nemotoda Nemertea Question 2 30 seconds Q. A stiff hair, bristle or bristle like process or part on the ventral side of the organism that helps movement Web31 mrt. 2024 · All nematodes are shown bilateral symmetry with the head being radially symmetrical, pseudocoelomate. Complete answer: Ascaris, hookworm, and whipworm are parasitic worms referred to as soil-transmitted helminths (STH). Together, they cause a major burden of parasitic disease worldwide known as Ascariasis. WebYou will notice that earthworms have long, cylindrical body that is divided into similar segments. The grooves that extend around the body of the worm show the arrangement of the segments. Some species of earthworms have a body composed of over 100 segments. How many segments does your earthworm have? Symmetry. Earthworms have … busy bees oxford