Test: Platyhelminthes, Aschelminthes & Annelida - JAMB MCQ

Platyhelminthes is commonly known as the flatworm phylum. It includes organisms like tapeworms and planarians.

Aschelminthes, also known as the roundworm phylum, includes organisms like nematodes. They are commonly found in soil and aquatic environments.

Annelida is the phylum that includes segmented worms. Earthworms and leeches are examples of annelids.

Platyhelminthes, or flatworms, exhibit a high degree of cephalization and possess a centralized nervous system. This allows them to respond to stimuli and exhibit more complex behaviors.

Platyhelminthes, or flatworms, includes parasitic worms like tapeworms and flukes. They often inhabit the digestive systems of their hosts.

Aschelminthes, or roundworms, have a pseudocoelom, which is a fluid-filled body cavity that partially surrounds the internal organs.

Annelids, or segmented worms, have a closed circulatory system. The blood flows within vessels, allowing for efficient transport of nutrients and oxygen.

Platyhelminthes, or flatworms, have specialized excretory cells called flame cells. These cells help regulate the osmotic balance and eliminate metabolic waste.

Annelids, or segmented worms, exhibit a high degree of body segmentation. Each segment contains specialized structures, such as setae and parapodia.

Mollusca, or mollusks, possess a radula, which is a specialized feeding organ used for scraping food. Examples of mollusks include snails, clams, and squids.