Which of  the  following types of  plastid does not contain stored food material?

Based on the type of pigments plastids can be classified into chloroplasts, chromoplasts and leucoplasts. The chloroplasts contain chlorophyll and carotenoid pigments which are responsible for trapping light energy essential for photosynthesis. 

In the chromoplasts fat soluble carotenoid pigments like carotene, xanthophylls and others are present. This gives the part of the plant a yellow, orange or red colour. 

The leucoplasts are the colourless plastids of varied shapes and sizes with stored nutrients, amyloplasts store carbohydrates (starch), e.g., potato, elaioplasts store oils and fats whereas the aleuroplasts store proteins.