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Pome

Pome 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 Pome rather than just read about it. In short: In botany, a pome is a type of fruit produced by flowering plants in the subtribe Malinae of the family Rosaceae. Pomes consist of a central 'core' containing multiple small seeds, which is enveloped by a tough membrane and surrounded by an edible layer of flesh.

Pome — main illustration
Pome — illustration

Key takeaways

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

Reference excerpt

In botany, a pome is a type of fruit produced by flowering plants in the subtribe Malinae of the family Rosaceae. Pomes consist of a central 'core' containing multiple small seeds, which is enveloped by a tough membrane and surrounded by an edible layer of flesh. Many, but not all, pome fruit trees are deciduous, and undergo a dormant winter period that requires cold temperatures to break dormancy in spring. Well-known pomes include the apple, pear, loquat, and quince.

Etymology The word pome entered English in the late 14th century, and referred to an apple or an apple-shaped object. It derived from the Old French word for apple: pome (12th century; modern French is pomme), which in turn derived from the Late Latin or Vulgar Latin word poma 'apple', originally the plural of Latin pomum 'fruit', later 'apple'.

Morphology A pome is an accessory fruit composed of one or more carpels surrounded by accessory tissue. The accessory tissue is interpreted by some specialists as an extension of the receptacle and is then referred to as 'fruit cortex', and by others as a fused hypanthium (floral cup). It is the most edible part of this fruit. The carpels of a pome are fused within the core. Although the epicarp, mesocarp, and endocarp of some other fruit types look very much like the skin, flesh, and core respectively of a pome, they are parts of the carpel (see above diagram). The epicarp and mesocarp of a pome may be fleshy and difficult to distinguish from one another and from the hypanthial tissue. The endocarp forms a leathery or stony case around the seed, and corresponds to what is commonly called the core.

A pome-type fruit with a stony rather than a leathery endocarp may be called a polypyrenous drupe. The shriveled remains of the sepals, style and stamens can sometimes be seen at the end of a pome opposite the stem, and the ovary is therefore often described as inferior in these flowers.

Examples

The best-known example of a pome is the apple. Other examples of plants that produce fruit classified as a pome are Cotoneaster, Crataegus (hawthorn and mayhaw), medlar, pear, Pyracantha, quince, rowan, loquat, toyon, and whitebeam. Some pomes may have a mealy texture (e.g., some apples); others (e.g., Amelanchier, Aronia) are berry-like with juicy flesh and a core that is not very noticeable.

See also Nut (fruit)

References

External links Media related to Pome at Wikimedia Commons

Illustrations

Pome: Anatomy of apple pome compared to a pea pod. Botanically, a fruit is derived from a carpel; apples normally have five carpels, while a pea pod is a single carpel. The flesh of the apple is derived from the swollen receptacle that surrounds the carpels.
Anatomy of apple pome compared to a pea pod. Botanically, a fruit is derived from a carpel; apples normally have five carpels, while a pea pod is a single carpel. The flesh of the apple is derived from the swollen receptacle that surrounds the carpels.
Pome: Pomes of common medlar, Mespilus germanica
Pomes of common medlar, Mespilus germanica

Worked examples

Example 1 — a first encounter with Pome

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

In research
Pome 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 Pome 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
Pome is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fruit morphology, so understanding it makes those chapters shorter.
In everyday life
Look for Pome 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 Pome in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Pome means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Pome out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Pome in simple terms?

In botany, a pome is a type of fruit produced by flowering plants in the subtribe Malinae of the family Rosaceae. Pomes consist of a central 'core' containing multiple small seeds, which is enveloped by a tough membrane and surrounded by an edible layer of flesh.

Why does Pome 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 Pome?

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 Pome.

Tags

  • Fruit morphology

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