Question

Read the following statements about the phylum Annelida. Identify the true and false statements and select the correct option after referring to the given table.
A. Annelids are diploblastic, metamerically segmented, coelomate animals.
B. Their neural system consists of paired ganglia connected by lateral nerves to a single ventral nerve cord.
C. They possess longitudinal and circular muscle fibers which help in locomotion.
D. Nephridia help them in osmoregulation and excretion.

• A. A: False, B: True, C: False, D: True
• B. A: False, B: False, C: True, D: True
• C. A: True, B: False, C: True, D: False
• D. A: False, B: True, C: False, D: False

Answer 1

Answer: (B)

Annelids are triploblastic, metamerically segmented and coelomate animals. Their neural system consists of paired ganglia connected by lateral nerves to a double ventral nerve cord. They possess longitudinal and circular muscle fibres which help in locomotion. Nephridia help them in osmoregulation and excretion.