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What type of reproduction occurs in ferns through spore formation?

In a fern, spores are formed in sporangium. The plants of Pteridophytes are sporophytes. They reproduce asexually by forming spores in sporangia. In ferns an unbranched sporophyte produces sporangium. A spore is an asexual reproductive body that is covered with a hard protective shield under unfavorable conditions such as high temperature and low humidity. Under favorable conditions, the spores germinate and grow into new plants.