biology

Thickshell pondsnail

Thickshell pondsnail 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 Thickshell pondsnail rather than just read about it. In short: Ladislavella utahensis, common name the thickshell pondsnail, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc in the family Lymnaeidae, the pond snails. This species is endemic to Utah Lake in the United States.

Key takeaways

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

Reference excerpt

Ladislavella utahensis, common name the thickshell pondsnail, is a species of air-breathing freshwater snail, an aquatic pulmonate gastropod mollusc in the family Lymnaeidae, the pond snails. This species is endemic to Utah Lake in the United States. The last living snails were found in the early 1930s.

Shell description The shell is globose, somewhat umbilicated and irregularly costate. The color of the shell is light horn and nearly pellucid. The spire is rather small and conical. The shell has from 4 to 4 and half convex whorls, that are somewhat flattened above, giving rather a shouldered appearance to the whorls. Whorls are rapidly increasing in size. The last whorl is inflated, with numerous rather marked transverse costae and minutely wrinkled. The suture is somewhat deep, regularly impressed. The aperture is elongately ovate, effuse, approaching patulous and pearly white within. The outer lip is simple and its margin is connected by a slight calcareous deposit. The columella is somewhat twisted, but straight in front. The average width of the shell of Ladislavella utahensis is 7.10 mm. The average height of the shell is 13.40 mm. The maximum width of the shell is 8.88 mm. The height of the shell is 16.82 mm. The width of the aperture is 5.90 mm. The height of the apeture is 9.00 mm.

Anatomy The anatomy of the radula was not published. (cf.)

Distribution This species is endemic to Utah and it is known only from Utah Lake. The type locality is Lake Utah, Lehi, Utah. The species was already considered "rare" in Utah Lake in the 1880s. The most recent living examples were found in 1933.

Ecology This species was associated with abundant individuals of the snails Valvata utahensis and Fluminicola fusca and with the bivalve Sphaerium dentatum.

References

This article incorporates public domain text from reference

Illustrations

Worked examples

Example 1 — a first encounter with Thickshell pondsnail

Start with the simplest possible case. Write down what Thickshell pondsnail 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 Thickshell pondsnail 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 Thickshell pondsnail 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 Thickshell pondsnail

In research: Thickshell pondsnail 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 Thickshell pondsnail 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: Thickshell pondsnail is common in secondary-school and first-year university syllabi. It links to neighbouring topics Critically endangered fauna of North America, Endemic fauna of Utah, Gastropods described in 1884, so understanding it makes those chapters shorter.
In everyday life: Look for Thickshell pondsnail 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 Thickshell pondsnail in 20 minutes

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

Frequently asked questions

What is Thickshell pondsnail in simple terms?

Why does Thickshell pondsnail 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 Thickshell pondsnail?

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 Thickshell pondsnail.