Meanings of hermaphrodite animals in English

There are many hermaphrodite animals which cannot fertilise themselves, but most unite with another hermaphrodite.

Many hermaphrodite animals must unite for reproduction, but the necessity of such union apparently depends solely on their structure.

But still there are many hermaphrodite animals which certainly do not habitually pair, and a vast majority of plants are hermaphrodites.

Heterostyled plants are comparable to hermaphrodite animals, such as snails, which require the concourse of two individuals, although each possesses both the sexual elements.