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  4. Characterstic Features of Urochordata MCQ - Practice Questions with Answers

Characterstic Features of Urochordata MCQ - Practice Questions with Answers

Edited By admin | Updated on Sep 18, 2023 18:34 AM | #NEET

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  • 15 Questions around this concept.

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QuestionEASY

Tunicates are called so because

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Which of the following statements is true for the phylum Chordata?

(a) In a Urochrdata, the notochord extends from head to tail and is present throughout their life.

(b) In Vertebrata, notochord is present during the embryonic period only

(c) The central nervous system is dorsal and hallow

(d) Chordata is divided into 3 subphyla: Hermichordata, Tunicata, and Cephalochordata

View Solution

Concepts Covered - 1

Sub Phylum Urochordata - Characteristics Features
  • These animals are also called tunicates because of the presence of cellulose-like carbohydrate material called tunic that covers the outer body surface of these animals
  • They possess notochord only during the larval stage. The notochord at this stage is confined to the tail region only
  • The adult tunicates have only one feature of chordates, i.e., pharyngeal gill slits. The notochord, nerve cord and post-anal tail disappears in adults
  • They are hermaphroditic animals. The larvae hatch from the eggs inside the body of adult tunicate
  • They show retrogressive metamorphosis
  • Most of the Urochordates are sessile
  • They feed on plankton and detritus
  • Examples : Ascidia,Herdmania, Doliolum and Salpa
  • The following figure shows the comparative diagrams of larval and adult tunicate : 

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Sub Phylum Urochordata - Characteristics Features

Study other Related Concepts

Characterstic Features of Urochordata Current Topic

Concept of Living and Need for Classification
Taxonomy and Taxonomical Aids
Steps of Taxonomy
Vernacular and Scientific Names
Binomial Nomenclature
Taxonomic Hierarchy In Biological Classification
Taxonomical Aids
Classification Systems
Three domains of life
History of Classification of Organisms

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