biology

Picea obovata

Picea obovata 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 Picea obovata rather than just read about it. In short: Picea obovata, the Siberian spruce, is a spruce native to Siberia, from the Ural Mountains east to Magadan Oblast, and from the Arctic tree line south to the Altay Mountains in northwestern Mongolia. It is a medium-sized evergreen tree growing to 15–35 m tall, and with a trunk diameter of up to 1.5 m, and a conical crown with drooping branchlets.

Key takeaways

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

Reference excerpt

Picea obovata, the Siberian spruce, is a spruce native to Siberia, from the Ural Mountains east to Magadan Oblast, and from the Arctic tree line south to the Altay Mountains in northwestern Mongolia. It is a medium-sized evergreen tree growing to 15–35 m tall, and with a trunk diameter of up to 1.5 m, and a conical crown with drooping branchlets. The shoots are orange-brown, with variably scattered to dense pubescence. The leaves are needle-like, 1–2 cm long, rhombic in cross-section, shiny green to grayish-green with inconspicuous stomatal lines; the leaves subtending a bud are distinctively angled out at a greater angle than the rest of the leaves (a character shared by only two or three other spruces). The cones are cylindric-conic, 5–10 cm long and 1.5–2 cm broad, green or purple, maturing glossy brown 4–6 months after pollination, and have stiff, smoothly rounded scales. The specific name obovata means "egg-shaped." It is an important timber tree in Russia, the wood being used for general construction and paper making. The leaves are used to make spruce beer. Siberian spruce cone-scales are used as food by the caterpillars of the tortrix moth Cydia illutana. Due to their hardness and flexibility, planks made from untreated siberian spruce are the material of choice for the surfaces of modern world-class velodromes.

Taxonomy and systematics Siberian spruce and Norway spruce (Picea abies) have turned out to be extremely similar genetically and might be considered two closely related subspecies of P. abies. Siberian spruce hybridises extensively with Norway spruce where the two species (or subspecies) meet in northeastern Europe; trees over a broad area from extreme northeast Norway and Sweden, northern Finland east to the Ural Mountains are classified as the hybrid Picea × fennica (Regel) Komarov (or P. abies subsp. ×fennica, if the two taxa are considered subspecies); they differ from typical P. obovata from east of the Urals in having cones with less smoothly rounded, often triangular-pointed, scales.

References

Illustrations

Worked examples

Example 1 — a first encounter with Picea obovata

Start with the simplest possible case. Write down what Picea obovata 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 Picea obovata 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 Picea obovata 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 Picea obovata

In research: Picea obovata 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 Picea obovata 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: Picea obovata is common in secondary-school and first-year university syllabi. It links to neighbouring topics Flora of Kazakhstan, Flora of the Palearctic realm, IUCN Red List least concern species, so understanding it makes those chapters shorter.
In everyday life: Look for Picea obovata 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 Picea obovata in 20 minutes

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

Frequently asked questions

What is Picea obovata in simple terms?

Why does Picea obovata 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 Picea obovata?

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 Picea obovata.