Home » Advanced Zoology » Animal Kingdom » Question

Animal Kingdom

Easy Questions

Advanced Zoology

Animal Kingdom
Structural Organisation in Animals
Digestion and Absorption
Breathing and Exchange of Gases
Body Fluids and Circulation
Excretory Products and their Elimination
Locomotion and Movement
Neural Control and Coordination
Chemical Coordination and Integration
Human Reproduction
Human Health and Disease
Biotechnology Principles and Processes
Biomolecules (Zoology)
Evolution (Zoology)
Biotechnology and its Applications
Reproductive Health
  1. One example of animals having a single opening to the outside that serves both as mouth as well as anus is:
    1. Octopus
    2. Asterias
    3. Ascidia
    4. Fasciola
Correct Option: D

Fasciola, a flatworm has a single body cavity to the outside that serves both as mouth for ingestion and anus for egestion of undigested food. This is known as blind sac plan.


Your comments will be displayed only after manual approval.