Complex sentence: Like the seed heads of "Taraxacum" (dandelions), these aid in wind-dispersal; they also serve as thermal insulation, conserving the temperature of the plant's reproductive organs by trapping solar radiation.
Split into simpler sentences: Like the seed heads of "Taraxacum" (dandelion), these serve the purpose of being carried by the wind to aid their dispersal. However, they also serve as a natural thermal insulation, conserving the temperature of the plant's reproductive organs by trapping solar radiation.