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 »

Different classes of mollusk eat in various ways, depending on their body structure, environment and physical capabilities. Most mollusks have a tongue-like organ, called a radula (which is rough like sandpaper), that th... More »

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Clams, octopuses, squids, snails, slugs, mussels and oysters are examples of mollusks. Mollusks are invertebrates that have a head, a visceral mass and a muscular lower body part called a foot. Some have hard external sh... 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 »