What structure is responsible for the growth of seedless plants?
a. spores
c. sori
b. rhizoids
d. none of the above

The answer of your question is actually is (c= sori)

a. spores

Explanation:

Spores are responsible for the growth of the seedless plants. Which represent a unit of asexual reproduction. They may be adapted to disperse and for survival often extending to periods. These are found as the life cycle of the algae, fungus, and protozoa. Usually unicellular produced due to meiosis. These spores are produced internally, and micropores are involved in the production of more complex structures.  Many fungal species eject spores that are dispersed by active force through the wind in the air. Also being less subjected to animal destruction as they contain no food reserves and require lower energy and materials to produce.