NEET 2010 Biology question

Crocodile and Penguin are similar to Whale and Dogfish in which one of the following features

(1)Have gill slits at some stageCorrect
(2)Possess a solid single stranded central nervous system
(3)Lay eggs and guard them till they hatch
(4)Possess bony skeleton.

Answer: (1)

Solution

All four animals are chordates, and all chordates possess paired pharyngeal gill slits at some stage of life (embryonic in reptiles, birds and mammals; functional in the fish dogfish). Option (1) is correct. Chordates have

See the full step-by-step solution

Create a free account to read the complete working, and practise questions like this in a timed test.

Create a free account

Question ID VK-090411