Does the starfish egg contain any visible concentration of yolk?

Starfish eggs do contain yolk, but it's not visible in the same way you might see it in a chicken egg. Here's why:

* Small Size: Starfish eggs are incredibly tiny, typically only a fraction of a millimeter in diameter.

* Diffuse Yolk: The yolk in starfish eggs is distributed throughout the cytoplasm, making it difficult to discern as a distinct entity.

* Microscopic Examination: You'd need a microscope to observe the yolk granules within the cytoplasm of a starfish egg.

Importance of Yolk: The yolk in starfish eggs is vital for providing nutrients to the developing embryo. It contains proteins, fats, and other essential substances that fuel the early stages of growth.

So, while you won't see a visible concentration of yolk like in a chicken egg, it's present within the starfish egg, playing a crucial role in embryonic development.