Organism Exhibiting Omnivorous Feeding Behavior

Steps:

• Define omnivore as an organism that consumes both plant and animal matter.
• Evaluate each option's primary diet based on biological classification.
• Identify the option that filters and ingests both algae (plant-based) and microorganisms (animal-based).
• Confirm the match with known larval feeding habits in aquatic ecosystems.

Why C is correct:

• Mosquito larvae are omnivores by definition, as they feed on organic detritus including algae (herbivorous) and protozoans/small invertebrates (carnivorous) via filter-feeding.

Why the others are wrong:

• A: Algae are autotrophs that produce their own food through photosynthesis, not consumers.
• B: Dragonfly larvae are strictly carnivorous predators that hunt and eat other aquatic insects.
• D: Planaria are carnivorous flatworms that prey on small animals and scavenge, without plant consumption.

Final answer: C