24 votes
Accepted

Why do the plants glow?

Whenever there is a puzzling, wasteful, obvious excess in an organism's biology or behaviour, the answer is almost always SEX! So, this glow would be a sexual attractant for pollinators or seed ...
Monty Wild's user avatar
  • 59.4k
19 votes

Feasibility of organic winged flight on 4g planet

(Lifted from the comment) If it's not an absolute requirement to stay in air with mechanical effort (like birds), the creature can also float if the atmosphere is dense. The denser the atmosphere is, ...
Jani Miettinen's user avatar
18 votes

How can I make two hearts work?

Vasoconstriction The actual volume of blood in the heart itself isn't particularly large -- only about 0.25 L. A reasonable puddle, but it's not going to kill you to lose it. (It's less than a ...
R.M.'s user avatar
  • 2,637
11 votes

Is it possible for an animal to have a plant stage in its life cycle?

What you are describing is not formally a plant. In fact it’s not a plant at all by most definitions of the term. The correct description is that it’s an animal that has a sessile phase during it’s ...
Austin Hemmelgarn's user avatar
10 votes
Accepted

Feasibility of organic winged flight on 4g planet

Let's start with a couple calculations based on fixed wing aircrafts, just so we can estimate the requirements. To get airborne, an aircraft's wings need to provide its weight in lift. Weight is a ...
Trish's user avatar
  • 16.2k
8 votes

Is it possible for an animal to have a plant stage in its life cycle?

Copying word to word from my previous answer to a similar question: It looks like the baseline of what you are looking for is the life cycle of jellyfishes with the difference of not taking place in ...
L.Dutch's user avatar
  • 283k
6 votes

Feasibility of organic winged flight on 4g planet

Winged flight might be possible, but a lot depends on the specifics of the atmosphere. The reason is pretty simple: the less dense is the atmosphere, the more difficult it will be for an aerofoil to ...
L.Dutch's user avatar
  • 283k
6 votes
Accepted

Debris protection for spiracle-like breathing holes, except 'nose' hair

Bagless vacuum cleaners have had to solve this. At least some of them use two-step method: cyclone to separate coarse stuff and filters to remove fine-grain stuff. The cyclone creates a vortex that ...
Jani Miettinen's user avatar
5 votes

How can I make two hearts work?

Have two independent cardiovascular systems. The simplest recipe is to have each pump blood through one side of the body. This is very scientifically plausible - symmetry is very common in nature, the ...
Therac's user avatar
  • 4,918
5 votes

Is it possible for an animal to have a plant stage in its life cycle?

Other posters have noted animals that have similar lifecycle to this, but plants also have a analogous process. It is called the alternation of generations. Basically, individuals who are diploid (...
E Tam's user avatar
  • 2,048
4 votes

Is it possible for an animal to have a plant stage in its life cycle?

If by plant stage, you mean a sessile stage rather than a photosynthetic one, it's possible. The tunicate, a marine invertebrate, does it. One notes that it devours much of its brain after it roots ...
Mary's user avatar
  • 28.3k
4 votes

Why do the plants glow?

Scaring away herbivores Imagine you are a prey animal in a world with very little light. There's still some - and so, just like in the abyssal zones of Earth's oceans, your predators still have eyes ...
SPavel's user avatar
  • 7,888
3 votes

Why do the plants glow?

To spread their seeds The pods are full of seeds and are a tasty treat for animals to eat, AKA fruit They glow to make them easy to see when they're ripe just like fruit change colour.
Thorne's user avatar
  • 46.3k
3 votes

How can I make two hearts work?

Put them in sequence, one usually in restmode, allowing just throughflow. In extreme stress, both hearts get active, by syncing up the heartbeats. But then the blood pressure waterhammer https://en....
Pica's user avatar
  • 2,250
3 votes

How can I make two hearts work?

that's why they wear all that bulky armor, silly now I can't be sure about Klingons, but sangheili and space Marines sure do have a lot of protective gear... but in all seriousness, I don't think ...
alkahest's user avatar
  • 772
2 votes

How can I make two hearts work?

There are real animals with multiple hearts, various arrangements. No need to speculate.
John Doty's user avatar
  • 797
2 votes

Why do the plants glow?

Its was a gene-drive accident. What started out as a little viral experiment, to convert all examples of a fish species in a botanical garden into glowing "fire-fish", turned via a predator ...
Pica's user avatar
  • 2,250
1 vote

Why do the plants glow?

Geothermal Plants You could have some plants that live primarily in very hot areas, right next to the lava rivers or volcanic lakes. In order to cool themselves down the plants run a vine up the rocky ...
Dast's user avatar
  • 3,092
1 vote

How can I make two hearts work?

It's easy to get two hearts working together: you just need to create a 3 way junction in your hearts input veins and arteries and where blood is pumped into the lungs and body, have both blood ...
hitbong.hitwife21's user avatar
1 vote

Debris protection for spiracle-like breathing holes, except 'nose' hair

As far as I know, the spiracles of most insects are also surrounded and covered by very very fine hair. Alternatively, it could be covered by a natural membrane or mucus like Gore-Tex, which is ...
MarsMagnus's user avatar
1 vote

How would a bioengineered warbeast get energy from fossil fuel products?

Sure, but why? A gallon of gas contains about 28K nutritional Calories (which are each 1000 chemistry calories, note the change in the initial 'C'), A gallon of butter contains about 25K nutritional ...
fectin's user avatar
  • 2,981
1 vote

What mechanism for the transmission of signals between neurons can be faster than our sodium-potassium?

Optical neurons and synapses. Bioluminescent neurons glow. That glow encodes information that travels through fiber optic synapses. Lots of biological structures have optical properties. Different ...
Vladimir Silver's user avatar

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