Basic Trope: A planet that only has a single biome on it.
- Straight: Planet Troperia's ecosystem is a massive world-wide jungle.
- Exaggerated: Every single planet in the Troperia solar system is covered in dense jungles, even those too close or too far away from their main star!
- Downplayed: The planet is a complete jungle planet but there are variations on the type of jungle.
- Justified:
- Troperia is completely barren and has no atmosphere, there's nothing but dust and stones on it.
- Troperia is a recently formed planet whose crust hasn't cooled yet. It's nothing but a volcanic wasteland.
- Troperia, as a cold, ice planet, is much too far from any star to have heat, or even light, or is very close to a star to be a hot, desert planet.
- Troperia isn't LITERALLY a planet full of jungles—most of the land is concentrated in the tropics where jungles tend to form.
- Troperia was created artificially, and various technology keeps it as a jungle.
- Troperia only started developing life recently and thus only algae, lichen, and bacteria even exist.
- Inverted: Swamps, mountains, jungles, glaciers, plains, oceans, deserts, volcanoes, and pretty much any biome that can be thought of are in walking distance from each other.
- Subverted: Someone states that they're approaching an ocean planet. A science officer states that's false because there's an on average 60 degree Celsius temperature difference at the equator and the poles, some areas are shallow enough to stand in while others are 50000 fathoms deep, there are pH variations of 5 to 9 in various areas, and there is a wide variety of species that can't be found in other areas of the planet.
- Double Subverted: The science officer turns out to be incorrect.
- Parodied: Planets have single biomes that make no sense: a windy planet with natural rock formations that happen to play 'Pop goes the Weasel,' for example.
- Zig Zagged: A planet appears to be an "ocean planet" until it's revealed that the poles are colder and appear more like an "ice planet", but then a horrible catastrophe occurs, boiling away all the liquid to leave the planet uniformly dry and barren.
- Averted: All planets have many biomes on their surface.
- Enforced: The animators admit to being too lazy to make planets have different biomes.
- Lampshaded: "Why is this planet only a desert? Planets don't work that way."
- Invoked: Terra-formers purposely make the planet a single biome.
- Exploited: Single-biome planets are generally heavily exploited for their one resource. Jungle planet? Serving the paper and lumber needs of trillions of beings. Desert planet? Say hello to Galaxy Glassworks. Ice planet? Where do you think the desert planet's inhabitants get their bottled water from?
- Defied: Terra-formers refuse to make the planet a single biome.
- Discussed: ???
- Conversed: "Lazy animators, planets tend to have more than one biome."
- Implied: Some characters discuss going to a beach planet for vacation, and a scientist character mentions getting sent to a crystal planet to conduct research, but the show never actually leaves its world, which is multi-biome.
- Deconstructed:
- Harsher single-biome planets, such as desert or ice worlds, are shown to be completely uninhabitable, while ones suitable for habitation just bore their denizens and passing spaceship crews half to death because of their uniformity.
- Because of every planet being single-biome, they have to rely on interstellar imports to support civilization, which is terribly expensive if not impossible outright, and multi-biome planets like Earth are a precious resource for any galactic empire due to their self-sustainability.
- Reconstructed: Single-biome planets end up becoming regarded for whatever they can be used for. The ice world hosts a popular ski resort, the forest world has numerous campgrounds, etc.
- Played For Laughs: A research vessel crew grows increasingly frustrated with finding a desert planet after desert planet, since they're looking for a jungle planet to research, which culminates in the captain blowing a fuse and unleashing a Cluster F-Bomb after finding a 17th desert planet in a row.
- Played For Drama:
- The main character is stuck on a dreary, depressing swamp planet with year-round rain and acidic water, and lives on the promises of the ticket out.
- The planet-wide desert, along with the (now) uninhabited cities, imply that something catastrophic happened.
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