science

Heterophyidae

Heterophyidae 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 Heterophyidae rather than just read about it. In short: Heterophyidae is a family of intestinal trematodes in the order Plagiorchiida. Description: "Tegument covered by spines.

Key takeaways

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

Reference excerpt

Heterophyidae is a family of intestinal trematodes in the order Plagiorchiida. Description: "Tegument covered by spines. Oral sucker not armed or armed by circumoral spines. Pharynx presented. Genital synus presented. Ventral and genital suckers usually not combined. Cirrus and bursa absent. Two testes located in posterior part of the body. Vitellaria in posterior part of the body." First intermediate hosts are molluscs of Prosobranchia, second intermediate hosts are fishes. Definite hosts are birds and mammals, including humans.

Genera Acanthotrema Travassos, 1928 Acetodextra Alloheterophyes Pearson, 1999 Apophallus Lühe, 1909 Ascocotyle Looss, 1899 Centrocestus Looss, 1899 Cercarioides Witenberg, 1929 Condylocotyla Pearson & Prevot, 1985 Cryptocotyle Lühe, 1899 Dermocystis Stafford, 1905 Dexiogonimus Euryhelmis Galactosomum Looss, 1899 Haplorchis Looss, 1899 Haplorchoides Chen, 1949 Heterophyes Cobbold, 1866 Heterophyopsis Tubangui & Africa, 1938 Heterotestophyes Leonov, 1957 Irinaia Caballero & Bravo-Hollis, 1966 Metagonimus Katsurada, 1912 Metagonimoides Neostictodora Sogandares-Bernal, 1959 Opisthometra Poche, 1926 Pandiontrema Oshmarin, 1963 Phocitrema Goto & Ozaki, 1930 Phocitremoides Martin, 1950 Pholeter Odhner, 1915 Procerovum Onji & Nishio, 1916 Protoheterophyes Pearson, 2002 Pseudogalactosoma Yamaguti, 1942 Pseudopygidiopsis Yamaguti, 1971 Pygidiopsis Looss, 1907 Pygidiopsoides Martin, 1951 Scaphanocephalus Jägerskiöld, 1903 Sonkulitrema Ablasov & Chibichenko, 1960 Stellantchasmus Onji & Nishio, 1916 Stictodora Looss, 1899 Taphrogonymus Cohn, 1904 Telogaster Tetracladium Kulachkova, 1954

References

External links

http://www.biology-online.org/dictionary/Heterophyidae Archived 7 March 2012 at the Wayback Machine https://web.archive.org/web/20110817025534/http://gelmintu.ru/klassy-rody-i-semejstva-gelmintov/semejstvo-heterophyidae-odhner-1914.html

Illustrations

Worked examples

Example 1 — a first encounter with Heterophyidae

Start with the simplest possible case. Write down what Heterophyidae 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 Heterophyidae 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 Heterophyidae 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 Heterophyidae

In research: Heterophyidae 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 Heterophyidae 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: Heterophyidae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Heterophyidae, Parasitic animal stubs, Taxa named by Robert Thomson Leiper, so understanding it makes those chapters shorter.
In everyday life: Look for Heterophyidae 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 Heterophyidae in 20 minutes

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

Frequently asked questions

What is Heterophyidae in simple terms?

Heterophyidae is a family of intestinal trematodes in the order Plagiorchiida. Description: "Tegument covered by spines.

Why does Heterophyidae 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 Heterophyidae?

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 Heterophyidae.