science

Liliidae

Liliidae 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 Liliidae rather than just read about it. In short: Liliidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used (there are many such systems); the only requirement being that it includes the family Liliaceae.

Key takeaways

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

Reference excerpt

Liliidae is a botanical name at the rank of subclass. Circumscription of the subclass will vary with the taxonomic system being used (there are many such systems); the only requirement being that it includes the family Liliaceae.

Liliidae in Takhtajan system The Takhtajan system treats this as one of six subclasses within class Liliopsida (= monocotyledons). This subclass consists of:

subclass Liliidae superorder Lilianae order Melanthiales order Colchicales order Trilliales order Liliales order Alstroemeriales order Iridales order Tecophilaeales order Burmanniales order Hypoxidales order Orchidales order Amaryllidales order Asparagales order Xanthorrhoeales order Hanguanales superorder Dioscoreanae order Stemonales order Smilacales order Dioscoreales order Taccales

Liliidae in Cronquist system The Cronquist system treats this as one of five subclasses within class Liliopsida (= monocotyledons), and it consists of:

subclass Liliidae order Liliales order Orchidales

Liliidae in Dahlgren and Thorne systems In the Dahlgren system and the Thorne system (1992) this is an important name: this subclass comprises the monocotyledons (in APG II these are the monocots).

Dahlgren (1985) subclass Liliidae [= monocotyledons] superorder Alismatanae superorder Triuridanae superorder Aranae superorder Lilianae superorder Bromelianae superorder Zingiberanae superorder Commelinanae superorder Arecanae superorder Cyclanthanae superorder Pandananae

Thorne (1992) (in the version of the system as depicted by Reveal)

subclass Liliidae [= monocotyledons ] superorder Lilianae superorder Hydatellanae superorder Triuridanae superorder Aranae superorder Cyclanthanae superorder Pandananae superorder Arecanae superorder Commelinanae

Liliidae in APG II system The APG and APG II systems do not use formal botanical names above the rank of order, and names such as Liliopsida and Liliidae have no place in these systems.

References

Illustrations

Worked examples

Example 1 — a first encounter with Liliidae

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

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

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

Frequently asked questions

What is Liliidae in simple terms?

Why does Liliidae 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 Liliidae?

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 Liliidae.