biology

Pontederia

Pontederia 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 Pontederia rather than just read about it. In short: Pontederia is a genus of tristylous aquatic plants, members of which are commonly known as pickerel weeds. Pontederia is endemic to the Americas, distributed from Canada to Argentina, where it is found in shallow water or on mud.

Key takeaways

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

Reference excerpt

Pontederia is a genus of tristylous aquatic plants, members of which are commonly known as pickerel weeds. Pontederia is endemic to the Americas, distributed from Canada to Argentina, where it is found in shallow water or on mud. The genus was named by Linnaeus in honour of the Italian botanist Giulio Pontedera. Pontederia plants have large waxy leaves, succulent stems and a thick pad of fibrous roots. The roots give rise to rhizomes that allow rapid colonization by vegetative reproduction. Species are perennial, and produce a large spike of flowers in the summer. There is a species of bee (Dufourea novaeangliae) that exclusively visits Pontederia cordata; waterfowl also eat the fruit of the plant. Pontederia cordata and Pontederia crassipes (formerly known as Eichhornia crassipes), have become invasive in many tropical and temperate parts of the globe, but are, on the other hand, efficient biological filters of polluted water in constructed wetlands.

Species

As of January 2024, Plants of the World Online accepted the following species:

Pontederia africana (Solms) M.Pell. & C.N.Horn Pontederia australasica (Ridl.) M.Pell. & C.N.Horn Pontederia azurea Sw. Pontederia brevipetiolata (Verdc.) M.Pell. & C.N.Horn Pontederia cordata L. Pontederia crassipes Mart. Pontederia cyanea (F.Muell.) M.Pell. & C.N.Horn Pontederia diversifolia (Vahl) M.Pell. & C.N.Horn Pontederia elata (Ridl.) M.Pell. & C.N.Horn Pontederia gigantea D.J.Sousa Pontederia hastata L. Pontederia heterosperma (Alexander) M.Pell. & C.N.Horn Pontederia korsakowii (Regel & Maack) M.Pell. & C.N.Horn Pontederia meyeri (A.G.Schulz) M.Pell. & C.N.Horn Pontederia natans P.Beauv. Pontederia ovalis Mart. ex Schult. & Schult.f. Pontederia paniculata Spreng. Pontederia paradoxa Mart. ex Schult. & Schult.f. Pontederia parviflora Alexander Pontederia plantaginea Roxb. Pontederia reflexa D.J.Sousa Pontederia rotundifolia L.f. Pontederia sagittata C.Presl Pontederia subovata (Seub.) Lowden Pontederia triflora (Seub.) G.Agostini, D.Velázquez & J.Velásquez Pontederia vaginalis Burm.f. Pontederia valida (G.X.Wang & Nagam.) M.Pell. & C.N.Horn

References

External links Google Books - Creating Freshwater Wetlands by Donald A. Hammer Media related to Pontederia at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with Pontederia

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

In research: Pontederia 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 Pontederia 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: Pontederia is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquatic plants, Botanical taxa named by Carl Linnaeus, Commelinales genera, so understanding it makes those chapters shorter.
In everyday life: Look for Pontederia 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 Pontederia in 20 minutes

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

Frequently asked questions

What is Pontederia in simple terms?

Why does Pontederia 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 Pontederia?

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 Pontederia.