Question

which of the following groups are both parasitic in phylum platyhelminthes? earthworms and gray worms planarians and red worms flukes and tapeworms

Explanation:

1. Analyze each option:

• Earthworms (Annelida) and Gray Worms: Earthworms are in Annelida, not Platyhelminthes, so this option is wrong.
• Planarians (Platyhelminthes, free - living) and Red Worms (Annelida): Planarians are free - living, not parasitic, and Red Worms are in Annelida, so this option is wrong.
• Flukes (Trematoda, Platyhelminthes) and Tapeworms (Cestoda, Platyhelminthes): Both flukes and tapeworms are parasitic members of Phylum Platyhelminthes.

Answer:

C. Flukes and Tapeworms