Q8
Most fish do not sink in water because of the presence of: I. swim bladder II. air bladder III. air sacs IV. air in spongy bones
A.
I and II are correct
AnswerB.
II and III are correct
C.
III and IV are correct
D.
I, II, III and IV are correct
Answer: Option A
Solution
Answer: Option A
Solution:
Fishes have a swim bladder or air bladder which helps them to remain buoyant without sinking in water. They are present in the body cavity.