Question

Platyheminthes are acoelomate animals with --- level of organisation.

• A. tissue
• B. cell
• C. organ system
• D. organ

Answer 1

Answer:

D. organ

Phylum platyheminthes:

• They have dorso-ventrally flattened body, hence are called flatworms 
• Flatworms are bilaterally symmetrical, 
• They are triploblastic 
• They are acoelomate animals with organ level of organisation.
• These are mostly endoparasites found in animals including human beings

Parasitic adaptations

1. Hooks and suckers are present in the parasitic forms.
2. Some of them absorb nutrients from the host directly through their body surface.
3. Presence of anaerobic respiration