Heterosporous plants produce two types of spores, microspores and megaspores, which develop into male and female gametophytes, respectively. Selaginella and Salvinia are examples of heterosporous plants.

Explanation:
Heterospory is a characteristic of some plants in which two types of spores are produced. These spores differ in size and develop into two different types of gametophytes. The male gametophyte is produced from the smaller microspore and the female gametophyte is produced from the larger megaspore. The gametophytes then produce male and female gametes, which fertilize to form the zygote.

Selaginella and Salvinia are both examples of heterosporous plants. Selaginella, commonly known as spikemoss, is a genus of plants that belongs to the family Selaginellaceae. It is a small, creeping plant that is commonly found in moist, shaded areas. Salvinia, on the other hand, is a floating aquatic fern that is found in ponds and slow-moving streams.

Both Selaginella and Salvinia produce two types of spores, microspores and megaspores. The microspores develop into male gametophytes, which produce sperm, while the megaspores develop into female gametophytes, which produce eggs. This reproductive strategy allows for greater genetic diversity and ensures successful reproduction in changing environments.

In contrast, homosporous plants produce only one type of spore, which develops into a bisexual gametophyte that produces both male and female gametes. This is the more primitive form of reproduction and is found in ferns and some other groups of plants.