Given below are four matchings of an animal and its kind of respiratory organ:
Correct answer: B. (A), (B) and (C)
- A. (A) and (B)
- B. (A), (B) and (C)
- C. (B) and (D)
- D. (C) and (D).
Explanation
Silver fish is an insect in which respiration occurs by tracheae. These communicate with the exterior by paired apertures, called spiracles. The respiratory system of the scorpion consists of 4 pairs of book lungs that communicate with the outer air through stigma. In sea squirts, respiration occurs through pharyngeal slits. In dolphins, respiration occurs by lungs. Silver Fish and scorpion belong to phylum arthropoda while sea squirt and dolphins belong to phylum chordata.
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