Questions tagged [biology]

For questions about living things. Does not exclude aliens, but additional information is usually necessary (consider using "xenobiology" instead).

Filter by
Sorted by
Tagged with
9 votes
3 answers
300 views

How tall can trees get if water transport limitations are bypassed?

The setting is Earth, millions of years in our future. In this setting a species of tree has made an evolutionary leap, allowing it to bypass the water transport constraints currently thought to be ...
user avatar
  • 4,055
4 votes
2 answers
110 views

How Can Crashdrake Live In a Pine Forest?

Crashdrakes. These dragons are, for just about any intent or purpose, a cassowary, or in other words they are big, flightless, highly aggressive and yet herbivorous death birds. Seeing that dragons in ...
user avatar
  • 12.8k
5 votes
2 answers
128 views

Chameleon harpoon tongue - plausable or not?

My future “chameleons” have evolved a harpoon-like tongue as an adaptation for catching larger prey as their own body size has gotten significantly larger over the milions of years. I drew a simple ...
user avatar
0 votes
0 answers
54 views

What kind of genetic mutation would make a woman produce more testosterone than a man? [duplicate]

Considering that in my story the woman has a XX cariotype( not AIS) and has PCOS or other condition that make her body produce a lot of androgens. I know that some conditions can make the adrenal ...
user avatar
6 votes
2 answers
325 views

What would my phylogenetic tree composed of sixteen Homo species look like?

In my world, there are sixteen human species (mammalian species from the Homo genus): Anatomically modern humans (no explanation is necessary); Marine humans/Merfolk (they have a seal-like blubber, ...
user avatar
9 votes
6 answers
2k views

Could a creature breathe carbon monoxide?

In real life nothing breathes carbon monoxide, but it still binds to the things that are supposed to carry oxygen around the body to my understanding. Could a form of life be able to actually use ...
user avatar
  • 2,874
0 votes
1 answer
68 views

How Can a Creature With Rock Armor Also Have an Inflating Head?

Globold are darkeye dragons with some rather unusual traits. Their bodies are more or less cylindrical, with a rounded chest and a sloping back, with two small arms and two big legs and a tail like a ...
user avatar
  • 12.8k
5 votes
3 answers
123 views

Would an extra-terrestrial human settlement rely on their endogenous or environmental rhythmic cycles to set their routines?

Setting: We have settled a planet with days and years not even approximately like earth. The settlers must decide what their workday is and their week, year, etc. Premise: Colonists will establish ...
user avatar
  • 5,947
13 votes
3 answers
2k views

Realistic crystal skulls

I need a plausibly scientific explanation for how an alien species could "transmute" a skull from bone into a glassy or crystalline substance. It doesn't need to to be too hard-science-y, ...
user avatar
9 votes
3 answers
841 views

Vampiric kiss with effects similar to nitrogen narcosis

My story has vampires in it. Within my story's universe, I want a human kissing one mouth-to-mouth to result in nitrogen narcosis-like symptoms for said human, and for said symptoms to intensify as ...
user avatar
7 votes
5 answers
567 views

What evolutionary driver could produce life that are animated only by light?

Imagine an alien world populated by silicon based lifeforms, the mega fauna can only be animated by exposure to adequate lights from the star or the moon. This world concept is inspired by a ...
user avatar
  • 46k
6 votes
4 answers
162 views

Could a humanoid survive in a communal circulatory system?

The Areans are a human-like species that have become wholly dependent on their technology. Most notably is their circulatory system They float in a blood-like liquid, and instead of lungs their ...
user avatar
  • 12.1k
11 votes
6 answers
4k views

What evolutionary pressures would lead to Gnomes?

In a universe I am creating, there are many living species of humans (mammals from the Homo genus) (for example, there are ogres, giants, merfolk, halflings, dwarfs, and goblins). One of them is ...
user avatar
13 votes
7 answers
2k views

Naturally flame-resistant forest climate for fire elementals?

I want to make a natural forest habitat where fire elementals (and possibly dragons, or other fey), who have recently arrived on earth, can use fire abilities without "burning down the house.&...
user avatar
  • 5,947
12 votes
2 answers
2k views

Big feline camouflage in savannah/grassland?

I'm working on a big feline who lives in savannas and grasslands. It's a solitary ambush predator, 1,4m / 4' 7'' to the shoulder, preys upon medium and big animals (antelopes, buffaloes, camelids, ...
user avatar
  • 203
6 votes
2 answers
255 views

What environmental conditions would cause large humans to evolve?

For most of our evolutionary history, we did indeed live in Africa - but not just the eastern savannahs, as previously thought: our biological ancestors were distributed everywhere from Morocco to the ...
user avatar
  • 163
3 votes
3 answers
302 views

Earth with a high concentration of atmospheric ethyl alcohol

Suppose you have an Earth-like planet which (for reasons completely unrelated to the question) spontaneously generates and maintains an atmosphere with an atmospheric ethyl alcohol concentration of 1%....
user avatar
  • 39.4k
1 vote
5 answers
183 views

Can fertility be tied to an individual's strength?

So I've got this species of nocturnal humanoids that reproduces asexually, or rather, they use a form of parthanogenesis for their reproduction and have only one sex. I've got them figured out for the ...
user avatar
  • 4,417
0 votes
3 answers
199 views

How much surface area would a dragon's wings need to let it fly?

The dragon is 350kg, and should be able to fly up to 2.5 km above sea level. Gravity and atmospheric pressure are normal. There isn't much of a limit for the muscle's strength and bone resistance, but ...
user avatar
  • 437
3 votes
2 answers
102 views

Mesmerake Hypnosis: How Does It Work?

Mesmerake are dragons, serpentine with two arms and no legs, but endowed with plenty of fins-four fins come off of their back, resembling butterfly wings but more frilly, sort of like betta fins, a ...
user avatar
  • 12.8k
3 votes
1 answer
63 views

Canidrakes: Determining Their Niche

Canidrakes are a well-known and relatively common species of darkeyed dragon, which due to convergent evolution and perhaps some magic resemble wolves but are bigger-most Canidrakes are like dire ...
user avatar
  • 12.8k
4 votes
3 answers
185 views

Is a keratin structure that gives milk a type of horn?

One of my species called the Pinnokiins has a nose-like horn on their face. This horn also works as their equivalent of nipples. There is a milk gland connected to it, at least during the time when ...
user avatar
3 votes
1 answer
55 views

Best Non-Arctic Environment for Chimerake

Chimerake are a species of brighteyed dragon, known for their aggressive and territorial natures. They are like tyrannosaurs, but the size of an Indian rhino, quadrupedal and covered in fluffy fur, ...
user avatar
  • 12.8k
9 votes
3 answers
1k views

How to design a digestive system for filtering insects out of sand?

The idea for this animal is it filters through the sand to catch small insect-like creatures that are 2-6 inches long. I'm thinking of giving it a sieve-like pouch of skin at its throat that filters ...
user avatar
  • 169
1 vote
3 answers
106 views

Utilizing Pain for Nourishment [closed]

Welcome to the Sanguine Jungle! This scenic location features many beautiful and amazing sights that you just won’t find anywhere else. Carnivorous plants? We got ‘em! Man eating beasts? Hiding in ...
user avatar
  • 5,201
3 votes
1 answer
73 views

Gastric Reversion: How Can It Work?

Scerafin, a species of quadrupedal darkeyed dragon that resemble sharks but live on land, are known for their telescoping necks (range of 3 yards), razor-sharp lance (read: snout horn) and tailfin, ...
user avatar
  • 12.8k
3 votes
3 answers
185 views

If 100 giant monsters the size of Godzilla appear randomly on Earth, how powerful must they be in order to cause an apocalypse? [closed]

So in my fictional post-apocalyptic world there are Godzilla sized monsters that were powerful enough to destroy humanity. They are powerful but not too overpowered, for example, most of them can take ...
user avatar
2 votes
2 answers
148 views

How colorful would plants and animals in a habitable planet orbiting a F main sequence star would be?

F main sequence stars are hotter and brighter than the Sun and therefore they emit more UV radiation than sun-like stars. Many scientists think that complex life could develop in planets orbiting such ...
user avatar
4 votes
4 answers
210 views

How can a disease increase the likelihood of stillbirth in male infants?

In the ancient world, maternity death rates were very high due to lack of medical knowledge and understanding, as well as life-saving technologies. As such, it was a toss up to whether the woman and ...
user avatar
  • 38.2k
12 votes
5 answers
3k views

Could a biological creature get oxygen from oxide rocks or by breaking down H2O?

I was curious if some biological creature, natural or engineered, alien or Earth-born, might technically be able to get oxygen from oxide rocks. I was similar curious if you could atomically break ...
user avatar
  • 132
2 votes
3 answers
105 views

What would the typical damage of a person creating propulsion on themselves and then use that momentum to punch someone be?

Lets say a character can create magic propulsion to push themselves, fly, and move quickly. And then this character uses this speed and momentum to punch someone. At what speed would the user begin to ...
user avatar
3 votes
1 answer
82 views

Cobalt chemosynthesis?

I want to create a world where everything revolves around cobalt and I was wondering if there are autotrophs that receive energy due to chemosynthesis involving cobalt compounds, is it possible?
user avatar
  • 41
7 votes
3 answers
203 views

Zombies: if magic kept them "living" or at least conscious, what would they experience as they rotted? [closed]

Instead of being spread by a virus or the temporary effects of a voodoo-induced trance or paralysis, zombies are created by a magical curse that causes the person to rot while remaining relatively ...
user avatar
4 votes
1 answer
145 views

Could Cacti Become Suited for an Arctic Environment?

The arctic is, essentially, a cold desert. Dry, doesn't rain much, little to no vegetation, but cacti persist in desert environments. Could they adapt their skills in a hot desert to survive in a cold ...
user avatar
1 vote
1 answer
120 views

How flexible would a Centaur's human half be? Could it turn around 180 degrees?

Would it be possible for a centaur's human half to turn around 180 degrees, with similar flexibility to a bird's neck? I know birds can turn their heads around about that much, and reach behind ...
user avatar
  • 132
3 votes
5 answers
654 views

How could an animal manipulate the flesh of a dead animal?

Context I am developing a disturbing creature called a Corpse-Back. After killing its prey the Corpse-Back will attach the body of the prey to its own body. Relevant information on the Corpse-Back ...
user avatar
18 votes
14 answers
4k views

Sapient as juveniles, monstrous as adults

I'm playing around with an idea in my head for a speculative species and I'd appreciate any help with a problem I've encountered trying to make them plausible. Let's say I have a species of animal, X. ...
user avatar
4 votes
2 answers
89 views

How much salt juice does my bioelectric pulsed field magnet need?

I'm making an organism which generates its own magnetic field - specifically, a magnetic field which pulses on and off repeatedly. Said organism uses said magnetic field to communicate with other such ...
user avatar
6 votes
4 answers
816 views

How does the human body reacts to cells older than its own? [closed]

The question is: If i could replace my arm with the arm of someone older than me, would the fact that the cells in the transplanted arm are older cause any specific reaction? Please handwave all ...
user avatar
  • 1,560
6 votes
3 answers
255 views

Maximum Orcish biological lifespan in this setting?

I'm working on a short story, and I plan to put some ancient Diremen in charge of the vast majority. (Please note that Orcs are called Diremen in this story) . Diremen have a variety of biological ...
user avatar
  • 353
-1 votes
2 answers
103 views

Would an inter-dimensional being need to eat? [closed]

Would a being that could enter any space in any time, assume any shape, need sustenance or a source of energy to stay alive or does their very existence as inter-dimensional beings imply that they are ...
user avatar
-5 votes
2 answers
144 views

Why do minotaur need glasses when their eyes are at the sides?

Minotaur is a race of mythical bipedal creature that is half man half cow, suppose they got integrated into our society due to them being relatively friendly and intelligent so we are starting to ...
user avatar
  • 46k
-5 votes
2 answers
130 views

How could people handle arachnophobia in a world where spiders have the size of pets? [closed]

I am thinking about an alien planet where most species of spiders are the size of cats and dogs and the biggest of the most rare species are the size of a car. In this world there is the same ...
user avatar
0 votes
1 answer
103 views

How would plants evolve into motile organisms? [closed]

I want to build a speculative future world where the majority of animals on Earth are gone and have been replaced by plants due to convergent evolution. I want to know how these creatures might evolve ...
user avatar
5 votes
5 answers
907 views

What could be the reasoning behind why Elves go into metamorphosis?

For my setting, I really want to push the non-human aspect of the other typical fantasy races. For Elves, I've been throwing the idea around that they go through a metamorphosis of sorts. I was ...
user avatar
7 votes
2 answers
127 views

How possible are my living cobblestone roads?

In my story the cobblestone roads have each individual stone actually be alive, and during the day time they remain completely still. The stones (during the nighttime) almost kinda swim in between ...
user avatar
2 votes
1 answer
140 views

What material do I use to make a biological electromagnet?

This is rather simple: I want a biological electromagnet capable of producing a weak magnetic pulse when electrified. I recognize what an electromagnet is: a coil, spiral, or helix of conductive ...
user avatar
7 votes
5 answers
306 views

Do we have enough knowledge for an alien John Hammond to resurrect our species from scratch?

Humanity was doomed. The sun was going nova, the Earth's core was stopping, and the Moon was falling down all at once. All counter-measures failed. But the brightest minds came together and built a ...
user avatar
  • 13.2k
58 votes
20 answers
8k views

Why Do My Super-Soldiers Constantly Mutter Their Thoughts Out Loud?

I am creating a race (either near-alien or a human sub-species) in a science fiction setting that have an unfortunate "tell." While they can stay silent in non-social (stealth-requiring) ...
user avatar
  • 54.5k
31 votes
6 answers
4k views

Where's the 'centaur of mass'?

This answer and my own both hint at centaurs being front-heavy or, as Separatrix puts it: Centaurs have a permanent curse by horse standards, they are, by design, permanently very heavy on the ...
user avatar

1 2
3
4 5
76