Animal Kingdom Question 739
Question: Which of the following during respiration obtain water dissolved oxygen by diffusion through their body surface
[HP PMT 2005]
Options:
A) Cnidarians
B) Fishes
C) Amphibians
D) Reptiles
Show Answer
Answer:
Correct Answer: A
Solution:
Jellyfish do not have a specialized respiratory system.
Their surface is thin enough for entry of oxygen directly from the water and then release carbon dioxide. The oxygen is absorbed through the coelenteron.
Therefore, jellyfish take in oxygen and release carbon dioxide through diffusion because of their thin layer of skin.
So, the correct answer is ‘Cnidarians’.
BETA
