Question

In prokaryotes, chromatophores are

• A. Specialized granules responsible for colouration of cells.
• B. Structures responsible for organizing the shape of the organism.
• C. Inclusion bodies lying free inside the cells for carrying out various metabolic activities.
• D. Internal membrane systems, that may become extensive and complex in photosynthetic bacteria.

Answer 1

Answer: (D)

Internal membrane systems, that may become extensive and complex in photosynthetic bacteria.

• Chromatophores are internal membrane systems present in photosynthetic prokaryotes and may become extensive and complex in photosynthetic bacteria.
• These develop as membrane lined sacs or thylakoids from the plasma membrane. Thylakoid membranes contain photosynthetic pigments in cyanobacteria and purple bacteria. Small sacs or granules containing pigments phycobilin are attached to these membranes. In green bacteria chromatophores are covered by nonlipid protein-membrane They are some times called chlorosomes.
• Hence In prokaryotes, chromatophores are Internal membrane systems, that may become extensive and complex in photosynthetic bacteria.
• So, the correct answer is 'Internal membrane systems, that may become extensive and complex in photosynthetic bacteria'.