Respuesta :
Reproductive structures consisting of one or more photosynthetic cells surrounded by fungal hyphae are called Soredia.
Explanation:
Soredia and isidia are produced by lichens as reproductive structures.
Lichen is the symbiotic association of an alga or cyanobacterium with a fungus.
Symbiosis is a close association between organism in which both benefit each other.
In lichens the photosynthetic organism prepares food while fungus absorbs nutrients and water.
Soredia refers to the reproductive structures, which comprises one or more photosynthetic cells surrounded by fungal hyphae.
What is soredia?
They are the common reproductive compositions of lichens. In lichens, ase-xual reproduction takes place by incorporating simple fragmentation and generation of isidia and soredia. Soredia are the powdery propagules, which comprises one or more photosynthetic cells wrapped by fungal hyphae around the green algae or cyanobacteria.
The basic body composition of the lichen is formed by fungal hyphae. The discharging of soredia takes place via the openings in the upper cortex of the composition of lichen. Post its release, the dispersing of soredia takes place to establish the lichen into a novel location.
Thus, the correct answer is option a, that is, soredia.
Find out more information about reproductive structures of lichens here:
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