Answer: b. Are potentially capable of exchanging genes
Step-by-step explanation:
Ginko tress are deciduous tress and unique from other tress with some special features. Some of the characteristics of ginko tress are - They have fan-shaped leaves and they are able to tolerate many urban conditions including air pollution, heat, confined spaces, and salt and they are easy to establlish.
Ginko trees have cpabaility to exchange genes and produce a fertilized seed, the ovules (eggs) of the female plant get fertilized by the sperm from the male pollen. That is why they belong to same species according toMayr's framing of the biological species concept.
Hence, the correct option is b.