Cnidaria can undergo asexual and sexual reproduction

Asexual reproduction is relatively rapid, with the production of genetically identical clones. Asexual reproduction is often characteristic of favorable conditions, as in spring and summer;

Sexual reproduction is relatively slow, with the production of genetically dissimilar offspring. It is characteristic of declining conditions, as in fall.

Asexual reproduction is relatively rapid, with the production of genetically identical clones. Asexual reproduction is often characteristic of favorable conditions, as in spring and summer;