👉 The term "yolkless" refers to a type of animal or plant that lacks the yolk (or other internal organ) typically found in eggs. The presence of an eggshell, which is essential for protecting the embryo inside, is not part of this description. In general, "yolkless" refers to organisms that lack the yolk or another important organ system within their body, such as those with a single cell nucleus and no mitochondria (the organelles that are responsible