it is because of hormonal changes at different stages of their life cycle. many gastropods during their juvenile stage will be males and as they get older they will become females. also you have to take into account that there are environmental changes that also affect their behavior.
Monoecious mollusks possess both male and female reproductive organs within a single individual, allowing them to produce both sperm and eggs. In contrast, dioecious mollusks have distinct male and female individuals, with each sex producing only one type of gamete. This difference in reproductive strategy can influence their mating behaviors and population dynamics. Examples of monoecious mollusks include many species of gastropods, while dioecious examples include certain bivalves and cephalopods.
The persimmon is unusual. It is dioecious to monoecious. Androdioecious and tri-monoecious persimmons exist.
At least 30
They are also known as dioecious
How do gastropods function as decomposers?
No, snails are gastropods.
Gastropods have an open circulatory system. Check related links.
Yes, gastropods obtain oxygen primarily through gills or lungs, depending on their habitat. Aquatic gastropods typically use gills located in their mantle cavity to extract oxygen from water, while many terrestrial gastropods have evolved a lung-like structure that allows them to breathe air. This adaptability enables them to thrive in various environments, from oceans to freshwater and land.
Slugs are gastropods. All slugs are shell-less.
dioecious
marchantia is dioecious
periwinkles belong to a group called gastropods... Almost all marine gastropods breathe with a gill, but many freshwater species, and the majority of terrestrial species, have a pallial lung. The respiratory protein in almost all gastropods is a hemocyanin but a pulmonate family planorbidae have hemglobin as respiratory protein. sources :www.wikipedia.com