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:
brainly.com/question/3529377
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Answer:
The proximal convoluted tubule, arising from the Bowmans capsule, traverses within the cortex. ... On the other hand, the distal convoluted tubule has a straight part continuous with the ascending limb of the loop of Henle and a convoluted part lying in the cortex .
Explanation:
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We can rule out small fish and grasses. My guess is that zooplankton get their energy from phytoplankton, because phytoplankton use photosynthesis to get their energy.
        
             
        
        
        
found that animals are composed of cells is Theodor Schwann
found that plants are composed of cells is Matthias Schleiden
looked at cork through a compound microscope is Robert Hooke 
declared that all living cells can only come from other living cells called living cells "animalcules" is Rudolph Virchow