Which of the following plastids is involved in pigment synthesis?
Plastids constitute a family of interrelated organelles arising from undifferentiated proplastids, with interconversion regulated by light, developmental cues and nuclear-encoded transcription factors like GLK. Leucoplasts are non-pigmented plastids predominantly found in roots, seeds, tubers and non-green tissues, serving as biosynthetic hubs rather than photosynthetic factories. Unlike chloroplasts and chromoplasts, they lack extensive thylakoid grana and photosynthetic apparatus but retain double envelope and stromal enzymes for fatty acid, amino acid, starch and secondary metabolite synthe
Ref: Taiz et al., Plant Physiology and Development, 6th ed., Chapter 1: Plastid Types and Terpenoid Synthesis.
