biology

Vicia ervilia

Vicia ervilia 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 Vicia ervilia rather than just read about it. In short: Vicia ervilia, called ervil or bitter vetch, is an ancient legume crop of the Mediterranean region. Besides the English names, other common names include: gavdaneh (Persian), kersannah (Arabic), yero (Spanish), rovi (Greek), burçak (Turkish), and karshinim (Hebrew).

Key takeaways

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

Reference excerpt

Vicia ervilia, called ervil or bitter vetch, is an ancient legume crop of the Mediterranean region. Besides the English names, other common names include: gavdaneh (Persian), kersannah (Arabic), yero (Spanish), rovi (Greek), burçak (Turkish), and karshinim (Hebrew).

Description Bitter vetch is an annual plant up to 0.6 metres (2.0 ft) tall. It is insect-pollinated, and like other legumes is able to fix nitrogen. It can tolerate a range of soil types as long as these are moist and well-drained; it does not grow in heavy shade.

Cultivation The nutritional value of the grain for ruminant cattle has guaranteed the species' continued cultivation in Morocco, Spain and Turkey. The crop is easy to cultivate and harvest and can be grown on very shallow, alkaline soils.

Distribution The wild strains of bitter vetch are limited to an area that includes Anatolia and northern Iraq, with an extension south along the Anti-Lebanon Mountains of Syria and Lebanon. Traces of the earliest domesticated instances were recovered from several archeological sites in Turkey, with an uncorrected radiocarbon dating of the 7th and 6th millennia BC.

Uses The grain is an excellent sheep and cattle feed concentrate. It has been held in high esteem by farmers in the Old World since the beginning of agriculture to improve the nutritional value of bulk feeds. The grain when split resembles red lentils. For human consumption the bitterness of the seeds needs to be removed through leaching by several changes of boiling water. Owing to this bitterness, it is unlikely that someone would accidentally confuse bitter vetch with red lentils. According to Zohary and Hopf, this crop is consumed only by the poorest people or in times of famine. In ancient Rome, Pliny the Elder stated that bitter vetch (ervum) has medicinal value like vetch (vicia), citing the letters of Augustus where the emperor wrote that he regained his health from a diet of bitter vetch (N.H. 18.38). The plant is linked with the Talmudic borit karshina, a plant listed in the second century as an ingredient in the incense offerings employed in the Tabernacle and the First and Second Temples in Jerusalem.

References

Illustrations

Worked examples

Example 1 — a first encounter with Vicia ervilia

Start with the simplest possible case. Write down what Vicia ervilia 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 Vicia ervilia 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 Vicia ervilia 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 Vicia ervilia

In research: Vicia ervilia 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 Vicia ervilia 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: Vicia ervilia is common in secondary-school and first-year university syllabi. It links to neighbouring topics Founder crops, IUCN Red List least concern species, Vicia, so understanding it makes those chapters shorter.
In everyday life: Look for Vicia ervilia 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 Vicia ervilia in 20 minutes

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

Frequently asked questions

What is Vicia ervilia in simple terms?

Why does Vicia ervilia 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 Vicia ervilia?

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 Vicia ervilia.