science

Vermes

Vermes is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Vermes rather than just read about it. In short: Vermes ("vermin/vermes") is an obsolete taxon used by Carl Linnaeus and Jean-Baptiste Lamarck for non-arthropod invertebrate animals. Linnaeus In Linnaeus's Systema Naturae, the Vermes had the rank of class, occupying the 6th (and last) slot of his animal systematics.

Key takeaways

Vermes belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Vermes to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Vermes from memory before moving on to harder problems.

Reference excerpt

Vermes ("vermin/vermes") is an obsolete taxon used by Carl Linnaeus and Jean-Baptiste Lamarck for non-arthropod invertebrate animals.

Linnaeus

In Linnaeus's Systema Naturae, the Vermes had the rank of class, occupying the 6th (and last) slot of his animal systematics. It was divided into the following orders, all except the Lithophyta containing (in modern terms) organisms from a variety of phyla:

Intestina, including horsehair worms, earthworms, roundworms, liver flukes, leeches, hagfishes, and shipworms Mollusca, including slugs, sea slugs, polychaetes, sea mice, priapulids, salps, jellyfish, starfish, and sea urchins Testacea, including chitons, barnacles, clams, cockles, nautiluses, snails and serpulid worms Lithophyta, including various corals Zoophyta, including bryozoans, coralline algae, Hydra, sea pens, tapeworms, and Volvox Apart from the Mollusca, understood very differently from the modern phylum of that name, Linnaeus included a very diverse and rather mismatched assemblage of animals in the categories. The Intestina group encompassed various parasitic animals, among them the hagfish, which Linnaeus would have found in dead fish. Shelled molluscs were placed in the Testacea, together with barnacles and tube worms. Cnidarians (jellyfish and corals), echinoderms and polychaetes were spread across the other orders.

Lamarck Linnaeus's system was revised by Jean-Baptiste Lamarck in his 1801 Système des Animaux sans Vertebres. In this work, he categorized echinoderms, arachnids, crustaceans and annelids, which he separated from Vermes.

Modern After Linnaeus, and especially with the advent of Darwinism, it became apparent that the Vermes animals are not closely related. Systematic works on phyla since Linnaeus continued to split up Vermes and sort the animals into natural systematic units. Of the classes of Vermes proposed by Linnaeus, only Mollusca has been kept as a phylum, and its composition has changed almost entirely. Linnaeus's early classification of the soft-bodied organisms was revolutionary in its day. A number of the organisms classified as Vermes by Linnaeus were very poorly known, and a number of them were not even viewed as animals.

Vermiform

While the Vermes is no longer a taxonomic group, anatomists continue to use the description "vermiform" of animals or organs that are worm-shaped. The word root is Latin, vermes (worms) and formes (shaped). (A well known example of the same term is the vermiform appendix, a small, blind section of the gut in humans and a number of other mammals.) Several soft-bodied animal phyla including the annelids (earthworm and relatives) and the roundworms (mainly parasites), but also the minute parasitic mesozoans and some larger-bodied free-living phyla like the ribbon worms, peanut worms, and priapulids.

References

Worked examples

Example 1 — a first encounter with Vermes

Start with the simplest possible case. Write down what Vermes claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Vermes before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Vermes ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Vermes

In research: Vermes appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Vermes in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Vermes is common in secondary-school and first-year university syllabi. It links to neighbouring topics Animal classes, Obsolete animal taxa, Worms (obsolete taxon), so understanding it makes those chapters shorter.
In everyday life: Look for Vermes outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Vermes in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Vermes means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Vermes out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Vermes in simple terms?

Vermes ("vermin/vermes") is an obsolete taxon used by Carl Linnaeus and Jean-Baptiste Lamarck for non-arthropod invertebrate animals. Linnaeus In Linnaeus's Systema Naturae, the Vermes had the rank of class, occupying the 6th (and last) slot of his animal systematics.

Why does Vermes matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Vermes?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Vermes.