biology

Lecanorchis tabugawaensis

Lecanorchis tabugawaensis 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 Lecanorchis tabugawaensis rather than just read about it. In short: Lecanorchis tabugawaensis is a species of orchid which belongs to the group of mycoheterotrophic plants. Mycoheterotrophs are known for feeding off of the roots of fungal hosts, instead of utilizing photosynthesis.

Key takeaways

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

Reference excerpt

Lecanorchis tabugawaensis is a species of orchid which belongs to the group of mycoheterotrophic plants. Mycoheterotrophs are known for feeding off of the roots of fungal hosts, instead of utilizing photosynthesis. Myco-heterotrophy refers to the harmonious relationship between particular plants and fungi. After a thorough exploration of the plant's shape, size, and structure, it was determined to be closely associated with orchidaceous Lecanorchis amethystea, although inward variations confirmed this unique species. The plant was discovered in July 2015 by Yamashita Hiroaki in lowland forests on Yakushima island. This species is only found at two locations along the Tabu River. Other recent discoveries on this island include: Oxygyne yamashitae (2008), Gastrodia uraiensis (2015), and Sciaphila yakushimensis (2016). This island also harbors various scarce plant species such as Lecanorchis virella, Lecanorchis trachycaula, Yakushimense vexillabium, Apostoasia nipponica, Lycopodium sieboldii, and Lysionotus pauciflorus.

Etymology The name of this plant stems from the Japanese name for the Tabu River, "Tabugawa".

Description The plant is approximately 20–40 cm long in size. It sprouts between July and August, containing approximately 5 flowers which are about 2–4 cm in size each. The petals are yellowish white with a tint of purple. While at their peak they may become visible, however pairing their small size and limited maturing period, they are rarely seen.

Significance Lecanorchis tabugawaensis, along with other mycoheterotrophs, are claimed to be a valuable part of the ecosystem. Such plants that survive without direct or high levels of sunlight could potentially have future research and practical implements.

Conservation The population of L. tabugawaensis contains less than 50 mature plants, and are not known from any other locality. Therefore, L. tabugawaensis is classified as CR under Criterion D1 (IUCN 2014). The island where the plant was discovered contains vast cedar forests and no restrictions on logging, this area is also not currently protected. The excessive logging in surrounding areas is threatening these plants and the entire fungal network.

Ecology Certain plants, including L. tabugawaensis, no longer rely on insects for pollination, these plants have evolved to self-pollination.

References

http://www.natureworldnews.com/articles/31327/20161108/parasite-plant-cheating-orchid-feeds-fungi-instead-sunlight.htm https://www.eurekalert.org/pub_releases/2016-11/pp-pct102716.php http://www.kobe-u.ac.jp/en/NEWS/research/2016_11_03_01.html

Illustrations

Worked examples

Example 1 — a first encounter with Lecanorchis tabugawaensis

Start with the simplest possible case. Write down what Lecanorchis tabugawaensis 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 Lecanorchis tabugawaensis 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 Lecanorchis tabugawaensis 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 Lecanorchis tabugawaensis

In research: Lecanorchis tabugawaensis 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 Lecanorchis tabugawaensis 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: Lecanorchis tabugawaensis is common in secondary-school and first-year university syllabi. It links to neighbouring topics IUCN Red List critically endangered species, Myco-heterotrophic orchids, Vanilleae, so understanding it makes those chapters shorter.
In everyday life: Look for Lecanorchis tabugawaensis 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 Lecanorchis tabugawaensis in 20 minutes

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

Frequently asked questions

What is Lecanorchis tabugawaensis in simple terms?

Why does Lecanorchis tabugawaensis 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 Lecanorchis tabugawaensis?

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 Lecanorchis tabugawaensis.