Question

An organism appears to be a segmented worm. Upon observation it is determined that the
organism has a closed circulation, a mouth and an anus, and does not have an exoskeleton
The organism most likely belongs to the phylum:
A Mollusca
B. Annelida
C. Arthropoda
D. Chordate​

Answer 1

Annelida is the correct answer.

Answer 2

Answer:

Anelida

Explanation:

• This phylum includes segmented animals like; earthworms, leech etc
• There body is soft and bilaterally symmetrical
• There body is divided into ring like grove(segments) called annuli.
• They have complete digestive system from mouth to anus
• Excretion is by nephridia
• They have closed circulatory system
• Sexes may be separate or united (sexual reproduction )
• True body cavity is present
• Eg; Pheretima, leech