Orange-yellow colours of flowers and fruits are due to

• A. Chloroplasts
• B. Leucoplasts
• C. Aleuroplasts
• D. Chromoplasts

The orange-yellow colors of flowers and fruits are primarily due to the presence of chromoplasts.

What Are Chromoplasts?

Chromoplasts are a type of plastid found in plant cells. They contain pigments that give fruits and flowers their vibrant colors, particularly yellow, orange, and red.

Other Types of Plastids

• Chloroplasts: These are responsible for photosynthesis and contain green pigments called chlorophyll.
• Leucoplasts: These are colorless plastids that mainly store starches and oils.
• Aleuroplasts: A type of leucoplast that specifically stores proteins.

In summary, if you're looking for the source of those bright orange and yellow hues in flowers and fruits, chromoplasts are the answer!