Question

Which of the following properties are found in all chordates without exceptions?

1)Presence of a ventral heart with two or more chambers.

2)Presence of pharyngeal gill slits throughout life.
3)Notochord extends from head to tail throughout life.
4)Presence of post anal tail.​

Answer 1

Answer:

option 3

Explanation:

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Answer 2

Answer:

4)Presence of post anal tail.

Explanation:

By elemination of options:

Reason for elemination is as given below

1.) Heart is 2 chambered in fishes 3 chambered in amphibians and reptiles and 4 chambered in aves (birds) and mammals

2.) Lungs are present in aves and mammals

3.) In chordates notochord is replaced by vertebral column