biology

Parafontaria

Parafontaria is a biology 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 Parafontaria rather than just read about it. In short: Parafontaria is a genus of "flat-backed" millipedes (order Polydesmida) consisting of 14 species native to Japan and Korea. Parafontaria laminata armigera, formerly called train millipedes, has been synonymized with P. laminata.

Key takeaways

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

Reference excerpt

Parafontaria is a genus of "flat-backed" millipedes (order Polydesmida) consisting of 14 species native to Japan and Korea. Parafontaria laminata armigera, formerly called train millipedes, has been synonymized with P. laminata. This is because some populations exhibit periodical swarming behavior during which large numbers congregate and can impact train passage when this congregation occurs on tracks. Documentation of this event goes back to 1920. Individuals vary from around 3.5 to 6 cm (1.4 to 2.4 in) as adults, and feed on leaf litter as well as soil, making them comparable to earthworms in facilitating decomposition and soil nutrient cycling.

Species Parafontaria crenata Shinohara, 1986 Parafontaria doenitzi (Karsch, 1880) Parafontaria erythrosoma (Takakuwa, 1942) Parafontaria falcifera (Verhoeff, 1936) Parafontaria ishiii Shinohara, 1986 Parafontaria koreana (Paik, 1963) Parafontaria laminata (Attems, 1909) This species is poisonous. Parafontaria longa Shinohara, 1986 Parafontaria shiraiwaensis Shinohara, 1986 Parafontaria spathulata (Miyosi, 1951) Parafontaria takakuwai (Shinohara in Takashima & Shinohara, 1957) Parafontaria terminalis (Takakuwa, 1942) Parafontaria tokaiensis Tanabe, 2002 Parafontaria tonominea (Attems, 1899)

References

Worked examples

Example 1 — a first encounter with Parafontaria

Start with the simplest possible case. Write down what Parafontaria claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In biology, 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 Parafontaria 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 Parafontaria 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 Parafontaria

In research: Parafontaria appears in biology 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 Parafontaria 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: Parafontaria is common in secondary-school and first-year university syllabi. It links to neighbouring topics Endemic fauna of Japan, Millipede genera, Millipedes of Asia, so understanding it makes those chapters shorter.
In everyday life: Look for Parafontaria 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 Parafontaria in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Parafontaria 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 Parafontaria out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Parafontaria in simple terms?

Why does Parafontaria matter?

Because it connects several biology 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 Parafontaria?

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 Parafontaria.