Concept:
Plants produce numerous secondary metabolites that have important pharmaceutical and industrial applications. Morphine is one such alkaloid obtained from the opium poppy (Papaver somniferum) and is widely used as a powerful analgesic.
Step 1: Understand plant-derived products.
Plants synthesize compounds such as:
• Morphine
• Quinine
• Reserpine
• Vincristine
• Atropine
These compounds are valuable medicines and industrial products.
Step 2: Identify the given options.
• Insulin is produced by the pancreas or recombinant microorganisms.
• Penicillin is produced by the fungus Penicillium.
• Ethanol is mainly produced by microbial fermentation.
• Morphine is extracted from the opium poppy plant.
Step 3: Choose the correct answer.
Since morphine is a plant alkaloid obtained from Papaver somniferum,
\[
\boxed{Option (D) is correct
\]