Question

Need some help guys ...♀️♀️




Explain about Paltyhelminthes .




Will mark as brainliest.... ✔✔✔✔​

Answer 1

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Platyhelminthes very commonly known as flatworms or tapeworms, these animals are soft-bodied invertebrate animals. The most distinguishing feature of these invertebrates is their flat body. As the body does not have any cavity, they are flat.

Some defining characteristics of the phylum are that flatworms are acoelomate (they have no body cavity), triploblastic (the body has three tissue layers), and bilaterally symmetric (they have symmetric right and left sides and usually a definite head), and they have organ systems, including an excretory, digestive.

Examples of platyhelminthes:-

• Tapeworms
• Flukes
• Turbellaria
• Monogenea

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${\Huge\mathfrak{BeBrainly!}}}$

Answer 2

Platyhelminthes

Members of the phylum Platyhelminthes are flatworms, such as the planarian. Grubs and tapeworms are other examples of flatworms. Flatworms display bilateral symmetry; that is, the left and right halves of the body are mirror images of one another. Another characteristic of the platyhelminthes is cephalization, which means that one end of the animal functions as a head. The “head” contains a mass of nerve cells that acts as a brain and specialized regions for sensing light, chemicals, and pressure.

Flatworms have three distinct layers of tissue, all composed of living cells. They have true organs and organ systems for digestion, movement, excretion, and reproduction. The digestive system consists of a muscular tube with one opening at the mouth. The excretory system consists of a network of water-collecting tubules that empty their contents into sacs leading to the exterior.

Movement occurs by the contraction of muscle cells that lie below the epidermis. The contractions are coordinated by signals from a nervous system. Most platyhelminthes have both testes and ovaries, and the organisms pair up to exchange sperm and eggs in fertilization.