NEET UG 2003 — Animal Kingdom

Which one of the following is a matching pair of an animal and a certain win phenomenon it exhibits?

Sycon belongs to a group of animals, which are best described as:

Given below are four matchings of an animal and its kind of respiratory organ: (I) Silver fish - Trachea (II) Scorpion - Book lung (III) Sea squirt - Pharyngeal gills (IV) Dolphin - Skin The correct matchings are