Leucoplast is colourless. These plastids lack pigments and function in storage, distinguishing them from colored plastids.

Option Breakdown

Red in colour

Red coloration comes from chromoplasts containing carotenoids, not leucoplasts which store starch, proteins, or lipids without pigments.​

Blue in colour

Blue pigments (anthocyanins) occur in vacuoles, not plastids; leucoplasts remain unpigmented for storage roles.​

Green in colour

Green color defines chloroplasts with chlorophyll for photosynthesis; leucoplasts lack chlorophyll entirely.​

Colourless

Leucoplasts (amyloplasts, proteinoplasts, elaioplasts) are colorless organelles in non-photosynthetic tissues like roots and tubers.

Introduction

Leucoplast is colourless among red, blue, and green plastid options, essential for nutrient storage in plant roots and tubers.​

Plastid Types Overview

Leucoplasts store reserves without pigmentation, while chromoplasts provide color and chloroplasts enable photosynthesis in leaves.

Plastid Comparison