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Name the phylum in which dorsal nerve tu...

Name the phylum in which dorsal nerve tube, notochord and pharyngeal gill clefts are present.

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Chordata
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Identify the phylum in which the notochord is retained in the adult stage.

Name the phylum in which pharyngeal gill slits are present but notochord is absent.

Which of the following statements is correct for the phylum whose organisms are characterized by the presence of a dorsal hollow nerve cord and paired pharyngeal gill slits ?

The statements given below highlight some of the chordates features. They have a hollow nervous system which is present ventrally above the notochord. II. They prossess four pharyngeal gill slits present in the from of perfortions on the lateral sides of pharynx. III. Epidermis is made up of stratified epithelium. IV. They have two pairs of appendages, one pair at the begnning of the trunk and other in the middle of the trunk. V. They have a closed vascular system.

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LAKHMIR SINGH & MANJIT KAUR-DIVERSITY IN LIVING ORGANISMS-Diversity In Living Organisms
  1. Give one example of phylum Hemichordata.

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  2. What is common name of Balanoglossus ?

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  3. Name the phylum in which dorsal nerve tube, notochord and pharyngeal g...

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  4. Give one example of (a) Urochordata , (b) Cephalochordata

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  5. What do you meant by the term Craniata ?

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  6. What is the position of Notochord in the body of (a) Urochordata , (...

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  7. Give two examples of Cyclostomata.

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  8. What do you mean by the term Chondrichthyes ?

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  9. What do you mean by the term Osteichthyes ?

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  10. Name four Chordata classes having cold blooded animals.

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  11. Name the superclass of Chordata in which lateral line sense organs are...

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  12. Identify the following fishes : (a) Fish with 5 to 7 pair of gills ,...

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  13. Give one example of (a) cartilaginous fish , (b) bony fish

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  14. Give the scientific name of the following : (a) Mosquito fish , (b) ...

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  15. Why amphibians are present close to the water bodies ?

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  16. What do you understand by the term tetrapoda ? Name two classes belong...

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  17. Name the following (a) Organism in which external ear (pinna) is pre...

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  18. Name two classes chordates in which clawed digits are present

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  19. Name the first class of terrestrial chordates.

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  20. Name the reptile in which heat is four chambered.

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