Here's why:
* Leuco- is a prefix meaning white.
* Plastid refers to a small organelle found in plant cells that is responsible for various functions, including photosynthesis, storage, and pigment synthesis.
* Leucoplast is a type of plastid that lacks pigments and therefore appears white.
Leucoplast are responsible for storing starch, proteins, and lipids in plant cells. They are particularly important in root cells and other non-photosynthetic tissues.