So planarians' regenerative ability are powerful cells called pluripotent stem cells, which make up one-fifth of their bodies and can grow into every new body part. I hope this helped if you need more info about this let me know
The nervous system is referred to as a communication system because it carries messages to and from all parts of the body.
Spores and seeds have basically the same function-dispersal-but are vastly different because spores (D) are unicellular; seeds are not.
<h3>What are unicellular organism?</h3>
A unicellular organism can be regarded as single-celled organism, which are those organisms that consists of a single cell.
This is different from multicellular organism because it consists of multiple cells however Organisms can be selected base on general categories which are prokaryotic organisms and eukaryotic organisms.
It should be noted that Spores and seeds have basically the same function-dispersal-but are vastly different because spores (D) are unicellular; seeds are not.
Therefore option D is correct.
Read more about Spores here:
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D would be the answer because it’s more logical in a way than the others.