General Knowledge - Biology - Discussion

Discussion Forum : Biology - Section 1 (Q.No. 8)
8.
Most fish do not sink in water because of the presence of
  1. swim bladder
  2. air bladder
  3. air sacs
  4. air in spongy bones
I and II are correct
II and III are correct
III and IV are correct
I, II, III and IV are correct
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
31 comments Page 4 of 4.

Lisa said:   1 decade ago
How can swim bladder and air bladder help fishes not to sink in water?


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