biology

Brown four-eyed opossum

Brown four-eyed opossum 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 Brown four-eyed opossum rather than just read about it. In short: The brown four-eyed opossum (Metachirus nudicaudatus) is a pouchless marsupial of the family Didelphidae. It is found in different forested habitats of Central and South America, from Nicaragua to Brazil and northern Argentina, including southeastern Colombia, Paraguay and eastern Peru and Bolivia, at elevations from sea level to 1,500 m (4,900 ft).

Key takeaways

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

Reference excerpt

The brown four-eyed opossum (Metachirus nudicaudatus) is a pouchless marsupial of the family Didelphidae. It is found in different forested habitats of Central and South America, from Nicaragua to Brazil and northern Argentina, including southeastern Colombia, Paraguay and eastern Peru and Bolivia, at elevations from sea level to 1,500 m (4,900 ft). It is the only recognized species in the genus Metachirus, but molecular phylogenetics studies suggest that it should probably be split into several species. Population densities are usually low, and it is uncommon in parts of Central America. A density of 25.6/km2 (66/sq mi) was reported near Manaus, Brazil. Its karyotype has 2n = 14 and FN = 24. It is a nocturnal, solitary, strongly terrestrial and omnivorous animal, feeding on fruits, small vertebrates and invertebrates. The brown four-eyed opossum builds nests made of leaves and twigs in tree branches or under rocks and logs. It is seasonally polyestrous and the litter size varies from one to nine. The white spot over each eye inspired the common name of "four-eyed opossum". Its scaly tail is longer than its body. The opossum is mostly insectivorous, though it also consumes some types of fruit seeds, small vertebrates like birds and reptiles and invertebrates like crayfish and snails. The brown four-eyed opossum is a host of the acanthocephalan intestinal parasite Gigantorhynchus ortizi.

References

Illustrations

Worked examples

Example 1 — a first encounter with Brown four-eyed opossum

Start with the simplest possible case. Write down what Brown four-eyed opossum 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 Brown four-eyed opossum 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 Brown four-eyed opossum 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 Brown four-eyed opossum

In research: Brown four-eyed opossum 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 Brown four-eyed opossum 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: Brown four-eyed opossum is common in secondary-school and first-year university syllabi. It links to neighbouring topics Fauna of the Amazon, IUCN Red List least concern species, Mammals described in 1803, so understanding it makes those chapters shorter.
In everyday life: Look for Brown four-eyed opossum 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Brown four-eyed opossum in 20 minutes

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

Frequently asked questions

What is Brown four-eyed opossum in simple terms?

Why does Brown four-eyed opossum 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 Brown four-eyed opossum?

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 Brown four-eyed opossum.