Question

Notochord is present only in larval tail is the feature of :(a) Ascidia
(b) Salpa(c) Doliolum
(d) All of these

Answer 1

Answer:(d) All of these.

Explanation:Notochord is present only in larval tail is the feature of urochordata. All options are examples of urochordata.

Answer 2

Notochord is present only in larval tail is the feature of  All of these

1. notochord or primitive spine is present in the lower chordates which are flexible rod like structure providing main support to the body.
2. the presence of notochord in the larval stage is a feature of the urochordates.
3. all the mentioned species - Ascidia Salpa and Doliolum are urochordates.
4. urochordates are also called tunicates.

hence, the correct option is (d) All of these