give a characteristics of flatworms algae roundworms give their phylum too
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Characteristic features of Phylum Platyhelminthes
Their body is dorsoventrally flattened.
They exhibit bilateral symmetry.
Also, they are triploblastic, with three germ layers.
They do not have a body cavity and are acoelomate.
Body is soft and unsegmented.
They are mostly parasitic with a few free-living.
Norwegian: flatormer
Characteristics:
Flatworms are unsegmented worms with a tail and a head end. They are bilaterally symmetrical with a definite upper and lower surface. They have no body cavity or and no specialized respiratory or circulatory organs. This is the reason behind the flat shape, common to all flatworms. They depend on a large surface to allow oxygen and nutrition to diffuse into their bodies. Most species are hermaphrodites, having both female and male reproduction organs.
Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Algae can be multicellular or unicellular. Unicellular algae occur most frequently in water, especially in plankton.
Their body is dorsoventrally flattened.
They exhibit bilateral symmetry.
Also, they are triploblastic, with three germ layers.
They do not have a body cavity and are acoelomate.
Body is soft and unsegmented.
They are mostly parasitic with a few free-living.
Norwegian: flatormer
Characteristics:
Flatworms are unsegmented worms with a tail and a head end. They are bilaterally symmetrical with a definite upper and lower surface. They have no body cavity or and no specialized respiratory or circulatory organs. This is the reason behind the flat shape, common to all flatworms. They depend on a large surface to allow oxygen and nutrition to diffuse into their bodies. Most species are hermaphrodites, having both female and male reproduction organs.
Algae are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and other pigments for carrying out photosynthesis. Algae can be multicellular or unicellular. Unicellular algae occur most frequently in water, especially in plankton.
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