Reproduction in mollusks can be sexual depending on the species. All species produce eggs; in most species, eggs are released from the female's body before fertilization. The simplest mollusk reproductive system relies o... More »

Mollusks begin as eggs, transform into larvae, then into veligers before emerging as adults.The mollusk development process and life cycle is complex, particularly in the early stages of development. Upon reaching adulth... More »

According to the University of California’s Museum of Paleontology, cephalopod reproduction differs greatly from the reproductive strategies of most other mollusks. Most cephalopods exist as discrete male or female entit... More »

Platyhelminthes, also known as flatworms, are hermaphrodites, meaning individuals of the species produce both sperm and eggs. These are released from the platyhelminthes where they become cross-fertilized by other platyh... More »

Depending on the species, insects may reproduce either sexually or asexually. Sexual reproduction requires one egg from a female and a sperm from a male. The sperm fertilizes the egg, which resides in the female through ... More »

Planaria are able to reproduce either sexually or asexually, depending on the species and the circumstances of reproduction. Sexually reproducing planaria are hermaphrodites, and mating consists of partners exchanging sp... More »

Some snakes reproduce by laying eggs while other species give birth to live young. How snakes reproduce depends on the species and also the location. In cooler regions of the world, snakes reproduce only in spring and su... More »