Biology, 16.04.2020 22:08 Jasten

What is skin hose of flatworms

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Monogeneans are flatworms (platyhelminths) belonging to the Phylum Platyhelminthes, a major sub-division of the Animal Kingdom. In contrast with protozoans, flatworms are metazoans, i.e. they have multicellular bodies. On an evolutionary scale of anatomical advancement their rather compact bodies, lacking a skeleton or blood system, are regarded as relatively primitive, although their three-layered (triploblastic) construction (ectoderm on the outside, endoderm lining the gut and mesoderm between) places them ahead of sponges and the cnidarians (sea anemones, jellyfish and relatives). There are many different kinds of free-living platyhelminths and although this is not a monophyletic assemblage its diverse members are commonly referred to as ‘turbellarians’. Freshwater habitats may yield black or white planarians (triclad ‘turbellarians’) measuring a centimetre or so in length and gliding gracefully and effortlessly over stones or waterweeds, propelled by a ventral ‘sole’ of beating cilia. Similar, but often larger, polyclads may be found beneath stones on a rocky shore. There is also an abundant microfauna, invisible without a microscope, living between sand grains on sandy shores, and tiny platyhelminths capable of swimming freely using their cilia make up a large proportion of this ‘interstitial fauna’.

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relationships aren't everything. people everyday spend there entire life depending on reltionships and for someone to be there for them when this is absurd. why must people depend on someone else to bring them happiness? i'm not saying it wrong to feel happy with someone, but people feel that they need to be in a relationship in order to feel happy, when, this is not true. you can paint, write, read ir slend tume with family ir even spend time working in yourself. this can be an exciting experience to find yourself. it's bot wrong to be in a relationship but if you let it be your only source of happiness, than you will never find true happiness.

so, relationships are not always worth it. if you are so dependent on them, than in the end they arent worth it because you will realize how unhappy you really were. some people even tend to cut ties with family because they think they cabt make them happy, obly realtionships with a lover can. false. in order to find true happiness, one must learn to love themselves if they want to love someone else. it's unhealthy to be always depend on relationships and to alqays be in and out of one.

so live life, get that job you always wanted, buy those new shoes and love yourself. depend on yourself, not others. they arent worth it, you can make yourself more happier than most people can do to you. it's not woth it. take your time and have fun.

Answer from: Quest

the correct answer is - ability to find a mate

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