alleryA sponge has no lungs or gills. It exchanges gases by:
ADiffusion over its body
BTracheal tube network
CA moist outer cuticle
DBook lung chambers
Answer & Solution
Correct answer: A. Diffusion over its body
1. Sponges are simple animals with no special organs.
2. Gases pass straight through the body surface.
3. That is simple diffusion over the whole body.
_Source: syllabus Biology, Chapter 17, Breathing and Exchange of Gases._
Keep practising Breathing and Exchange of Gases
Browse all Breathing and Exchange of Gases questions for AP Intermediate 1st Year, or explore more Biology topics.
Related questions
Which cartilaginous part of the airway is called the sound box?During swallowing, which flap covers the glottis to keep food out of the larynx?Frogs can respire through their moist skin. This is known as:Respiration using vascularised gills, as in most aquatic arthropods, is called what?Earthworms exchange respiratory gases mainly through which structure?Breathing bingoWhich is biggerHow each gas travels