The feature that is not a characteristic of protochordata?
(a) Presence of notochord
(b) Bilateral symmetry and coelom
(c) Jointed legs
(d) Presence of circulatory system
Answers
Option C is the correct
Jointed legs
Answer:
Correct option is
C
Jointed legs
Jointed appendages are the characteristic feature of phylum Arthropoda which includes most of the insects.
Protochordate is an informal category of animals, named mainly for convenience to describe invertebrate animals that are closely related to vertebrates. This group is composed of the Phylum Hemichordata and the Subphyla Urochordata and Cephalochordata.
The Phylum Hemichordata consists of marine worms that share some, but not all of the characteristics of chordates. These animals have pharyngeal gill slits and a dorsal nerve cord, which is usually solid. The three body parts are proboscis, collar, and trunk. What was once thought to be a notochord is no longer considered homologous. Acorn worms are examples of hemichordates
The Urochordates and Cephalochordates are protochordate but belong to the Phylum Chordata
So, the correct answer is 'Jointed legs'
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