👉 Heterothermic refers to organisms that lack a central nervous system. In other words, they cannot reproduce their own offspring through fertilization or childbirth, and therefore rely on external sources of nutrition for their survival. Examples of this type of organism include:
1.
Drosophila
- A common fly species in which the larva feeds on nectar, while the adult flies feed on a single grain of pollen.
2.
Tetraodontid
- A group of extinct