Question

Define Phylum Aschelminthes or Nematoda in brief.

Answer 1

Phylum Aschelminthes:-

• They are generally called roundworms ,these organisms have narrow bodies which are round in cross section .
• They are bilaterally symmetrical, unsegmented and triploblastic .
• They lack a circulatory system .
• Most of them are free living and many live in moist soil.
• Examples-Pinworms, Hookworms and Guineaworms.

Answer 2

Answer:Nematodes are preominantly aquatic worms with a round body cross section and are usually called flatworms.they have organ level of body organisation,triploblastic and are bilaterally symmetrical.they are usually dioecious in nature with males and females having distinct morphological characteristics.

Explanation: