Question

What are the characteristics of phylum Annelida?

• A. Body is triploblastic.
• B. Body is segmented.
• C. Body shows bilateral symmetry.
• D. All of the above.

Answer 1

The correct option is D All of the above.

Characteristics of phylum Annelida are as follows:

(1) Cylindrical, segmented, bilaterally symmetrical and triploblastic organisms.

(2) Coelomate, often divided by internal septa, the body possesses a through the gut with mouth and anus.

(3) Closed circulatory system.

(4) Reproduction is sexual but sexes are not separate (hermaphrodite).

(5) Locomotion is through setae.

(6) For example, earthworm, leech, nereis, etc.

Therefore, the correct answer is option D.