Cycas- dioecious
Cycas is a genus of palm-like gymnosperms commonly known as cycads. Dioecious species are those in which male and female reproductive structures are present on separate plants. In Cycas, individual plants are either male or female, and they produce separate male and female cones for reproduction. This means that male and female reproductive structures are not present on the same plant.

Salvinia- heterosporous
Salvinia is a genus of floating aquatic ferns. Heterosporous plants produce two different types of spores, namely microspores and megaspores. In Salvinia, the microspores are produced in microsporangia and develop into male gametophytes, while the megaspores are produced in megasporangia and develop into female gametophytes. Thus, Salvinia exhibits heterospory.

Equisetum- homosporous
Equisetum, commonly known as horsetails, is a genus of fern-like plants. Homosporous plants produce only one type of spore, which gives rise to a bisexual gametophyte. In Equisetum, the spores are produced in spore-producing structures called sporangia, and they develop into bisexual gametophytes. Therefore, Equisetum is an example of a homosporous plant.

Pinus- dioecious
Pinus is a genus of coniferous trees commonly known as pines. Dioecious species are those in which male and female reproductive structures are present on separate plants. In Pinus, individual trees are either male or female, and they produce separate male and female cones for reproduction. This indicates that male and female reproductive structures are not present on the same tree.

Explanation:
The mismatch in this case is option B, where Salvinia is incorrectly labeled as heterosporous. Salvinia is actually a homosporous plant, not heterosporous. This means that it produces only one type of spore, which gives rise to a bisexual gametophyte. The spores of Salvinia are produced in sporangia and develop into bisexual gametophytes, similar to Equisetum. Therefore, the correct answer is B.

Pinus --> dioecious

The right answer is option (D)...