Hydra is dioecious.
Understanding Hydra's Reproductive Strategy
Based on the provided information, Hydras are classified as dioecious. This biological term means that individual organisms have separate sexes. In the case of Hydra, as the reference states, this means "each individual produces either sperm or eggs."
Dioecious Nature Explained
Unlike monoecious organisms which possess both male and female reproductive structures within a single individual, dioecious species require two different individuals (a male and a female) to reproduce sexually. This separation of sexes is a key characteristic of Hydra according to the text.
Sexual Reproduction Timing
While Hydra is well-known for its asexual reproduction via budding, it also reproduces sexually. The reference specifically mentions that in many temperate-zone species, sexual reproduction occurs seasonally, particularly during the autumn. This timing is significant:
- It allows for genetic recombination.
- The fertilized eggs produced can act as resistant stages.
The ability of these fertilized eggs to survive the winter conditions is highlighted as a critical factor enabling the species to endure unfavorable periods.
In conclusion, the reproductive strategy of Hydra involves individuals being distinctively male (producing sperm) or female (producing eggs), firmly placing them in the dioecious category.
