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For questions regarding the viability of a life-form design. These questions should focus on biologically plausible creatures.

7 votes
1 answer
253 views

Muscle mass required for organisms to jump

If an organism weighing roughly 20kg existed (same weight as a dog), similar also to the structural composition a dog. How much muscle mass would be required within those legs for it to jump 20m? Do …
Lutro's user avatar
  • 1,018
2 votes
2 answers
242 views

Could a semi-permeable membrane, which releases CO2 but contains O2 and nitrogen, biological...

I'm trying to create an alien which has external lungs. Air can be inhaled normally however, is it plausible that the material the lungs are made of is semi-permeable. Containing the nitrogen and oxyg …
Lutro's user avatar
  • 1,018
20 votes
4 answers
1k views

Physiological adaptation of life on a planet orbiting a red giant.

Let's say there exists an Earth-like exoplanet which orbits a normal star, with a similar process regarding the evolution of life on earth, yet the star became a red giant during said evolution. Assu …
Lutro's user avatar
  • 1,018
15 votes
9 answers
3k views

Could an organism see in infrared light as well as normal light, using its brain to process ...

Tl;dr: Humans create a composite image out out what each of their eyes see Humans process the two images into one using their visual cortex Humans can't see infrared because of a lack of photorecept …
Lutro's user avatar
  • 1,018
6 votes

Biological ''Helmet''

Some scarabs have transparent elytra, if you're looking for an actual retractable mask-like structure then this might be more suitable than nictitating membranes over individual eyes. This seems to fi …
Lutro's user avatar
  • 1,018