Monoecious

Definition

Monoecious organisms have both male and female reproductive organs in a single individual. This allows them to produce both eggs and sperm, facilitating self-fertilization or cross-fertilization with other individuals.

5 Must Know Facts For Your Next Test

1. Monoecious species can reproduce without needing a partner of the opposite sex.
2. Many sponges are examples of monoecious organisms.
3. Monoecious animals can still engage in sexual reproduction for genetic diversity.
4. In monoecious sponges, sperm is often released into the water to fertilize eggs retained within another sponge.
5. Monoecious should not be confused with hermaphroditism, although they are similar concepts.

Review Questions

• What does it mean for an organism to be monoecious?
• Can monoecious organisms reproduce on their own? Explain.
• Why is being monoecious advantageous for sponges?

Related terms

Dioecious: Species that have distinct male and female individuals, each producing only one type of gamete.

Hermaphroditism: A condition where an individual has both male and female reproductive organs, similar to but not always synonymous with monoecy.

Gametogenesis: The process by which gametes (sperm and eggs) are produced in an organism's reproductive organs.