Nematodes: Free-Living and Parasitic Roundworms

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What is the cause of soil-transmitted helminthiases?

Parasitic nematodes

What distinguishes nematodes from flatworms?

Tubular digestive system

In which clade are nematodes taxonomically classified?

Ecdysozoa

What is the estimated number of nematode species according to a 2013 survey?

<p>Over 25,000</p> Signup and view all the answers

Which phylum has kept the ancestral protostome Hox genotype?

<p>Nematomorpha</p> Signup and view all the answers

What is the phylum of nematodes?

<p>Nematoda</p> Signup and view all the answers

What do most nematode species feed on?

<p>microorganisms</p> Signup and view all the answers

What is the estimated number of nematode species according to a widely referenced article published in 1993?

<p>over 1 million species</p> Signup and view all the answers

What is the estimated number of nematode species according to a 2013 survey published in Zootaxa?

<p>over 25,000</p> Signup and view all the answers

What is the cause of uncertainty in estimating the total number of extant nematode species?

<p>difficulty in distinguishing nematode species</p> Signup and view all the answers

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