science

Orchidales

Orchidales 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 Orchidales rather than just read about it. In short: Orchidales is an order of flowering plants. In taxonomical systems, this is a relatively recent name as early systems used descriptive botanical names for the order containing the orchids.

Key takeaways

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

Reference excerpt

Orchidales is an order of flowering plants. In taxonomical systems, this is a relatively recent name as early systems used descriptive botanical names for the order containing the orchids. The Bentham & Hooker and the Engler systems had the orchids in order Microspermae while the Wettstein system treats them as order Gynandrae (a descriptive name referring to the stamens). In taxonomical systems these two descriptive names have now mostly dropped out of use. Circumscription of the order will vary with the taxonomic system being used. Although mostly the order will consist of the orchids only (usually in one family only, but sometimes divided into more families, as in the Dahlgren system, see below), sometimes other families are added:

Circumscription in the Takhtajan system Takhtajan system:

order Orchidales family Orchidaceae

Circumscription in the Cronquist system Cronquist system (1981):

order Orchidales family Geosiridaceae family Burmanniaceae family Corsiaceae family Orchidaceae

Circumscription in the Dahlgren system Dahlgren system:

order Orchidales family Neuwiediaceae family Apostasiaceae family Cypripediaceae family Orchidaceae

Circumscription in the Thorne system Thorne system (1992):

order Orchidales family Orchidaceae

Circumscription in the Wettstein system Wettstein system

order Gynandrae family Orchideae

APG system The order is not recognized in the APG II system, which assigns the orchids to order Asparagales.

Illustrations

Worked examples

Example 1 — a first encounter with Orchidales

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

In research: Orchidales 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 Orchidales 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: Orchidales is common in secondary-school and first-year university syllabi. It links to neighbouring topics Historically recognized angiosperm orders, Monocotyledons, so understanding it makes those chapters shorter.
In everyday life: Look for Orchidales 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 Orchidales in 20 minutes

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

Frequently asked questions

What is Orchidales in simple terms?

Orchidales is an order of flowering plants. In taxonomical systems, this is a relatively recent name as early systems used descriptive botanical names for the order containing the orchids.

Why does Orchidales 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 Orchidales?

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 Orchidales.