Question

Identify the correct statement with respect to phylum Nematoda.

Statement 1: They are bilaterally symmetrical and triploblastic.

Statement 2: They have a flattened body.

Statement 3: They are acoelomate.

• A. Only statement 1 is correct
• B. Only statement 2 is correct
• C. Only statement 3 is correct
• D. All the statements are correct

Answer 1

The correct option is A Only statement 1 is correct

• Members of phylum Nematoda are bilaterally symmetrical and triploblastic.
• These organisms appear circular in cross section. Hence, are called round worms. They have a cylindrical body.
• Their body cavity is called pseudocoelom. As the mesoderm is found as scattered pouches in between the ectoderm and the endoderm.