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For questions related to the biology of extra-terrestrial organisms. This tag implies the use of the science-fiction tag. Use the science-based or hard-science tags to impose greater scientific restrictions (see warning in tag wiki). The goal of this tag is to answer the question using known science.

2 votes

Why might a plant evolve a brain and the ability to move?

The "Why" isn't so important. Evolution is fickle; it cares more about the fact that they would survive, than why it would do it in the first place. Look at the Platypus. A multi-cellular life-form w …
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0 votes

What would be a plausible mechanism for conception involving an arbitrary number of gametes?

I don't remember the exact volume it was mentioned, but the Yeerks in Animorphs were a species of slugs that reproduced by having around three of their kind "combine", and then replicate into many off …
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