Final answer:
The claim that homosporous species' gametophytes are bisexual is true. Homosporous plants produce one type of spore which leads to gametophytes capable of producing both male and female gametes.
Step-by-step explanation:
The statement that gametophytes of homosporous species are bisexual is true. In homosporous plants, a single type of spore is produced, and the resulting gametophyte has the ability to produce both male and female gametes, usually on the same organism. This is in contrast to heterosporous plants, where two types of spores are produced: microspores that develop into male gametophytes and megaspores that develop into female gametophytes. Non-vascular plants such as bryophytes are usually homosporous, where the gametophyte is the dominant generation. An example of a heterosporous plant would be the spike moss Selaginella, which produces microsporangia and megasporangia within the same strobilus, leading to the development of male and female gametophytes respectively.
Homosporous species produce only one type of spore, which develops into a gametophyte that is bisexual, meaning it produces both male and female gametes. This is in contrast to heterosporous species, which produce two types of spores that develop into separate male and female gametophytes.
For example, in non-vascular plants like mosses, the gametophyte generation is dominant in the life cycle and produces both male and female gametes, usually on the same individual. This is true for other homosporous species as well.