Worm Comparison

Which phylum of worms has a bilateral symmetry, one-way digestive system, respiration through skin, hydrostatic skeleton and segmented body?

• Annelida
• Platyhelminthes
• Nemotoda
• Nemertea

Annelida means:

• "pore bearing"
• "little rings"
• "soft body"
• "earth worm"

A stiff hair, bristle or bristle like process or part on an organism

• Ganglia
• Setae
• Parapodia
• Nephridia

Which structure is NOT associated with digestion?

• Gizzard
• pharynx
• nephridia
• crop

Which of the following is a thickened segment of the earthworm’s body is used in reproduction?

• Septa
• Setae
• Clitellium
• Ganglia

If present, which type of skeleton is found in worms?

• Longitudinal
• Circular
• Exoskeleton
• Hydrostatic

Which of the following is a structure related to excretion in worms?

• Ganglia

• Gizzard

• Nephridia

• Crop

Which phylum of worms are pseudoceolomates?

• Platyhelminthes
• Nematoda
• Annelida

Which phylum includes hookworms, pinworms, and heart worms?

• Platyhelminthes
• Nematoda
• Annelida

Which of the following is the evolutionary advancement first found in annelids?

• Three germ layers
• A complete digestive system
• Cephalization
• Coelomates (tube within a tube)