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  • Please,please help me Which of the following represents the correct combination without any exception? Characteristics Class

Which of the following represents the correct combination without any exception?

Characteristics

Class

 

  • Option 1)

    Sucking and circular mouth; jaws absent, integument without scales;  paired appendages

    Cyclostomata

     

  • Option 2)

    Body covered with feathers; skin moist and glandular; fore-limbs form wings; lungs with air sacs

    Aves

     

  • Option 3)

    Mammary gland; hair on body;  pinnae; two pairs or limbs

    Mammalia

     

  • Option 4)

    Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord

    Chondrichthyes

     

 

Answers (1)

best_answer

 

Classification of Vertebrata -

It has two divisions and further classes.

1. Division Agantha (jawless) 

               Class Cyclostomata

2. Division Gnathostomata →

              1. Superclass Pisces (bear fins)   

                       1. Class Chondrichthyes

                       2. Class Osteichthyes

             2. Superclass Tetrapoda (bear limbs)

                       1. Class Amphibia

                       2. Class Reptilia

                       3. Class Aves

                       4. Class Mammals  

-

 

 


Option 1)

Sucking and circular mouth; jaws absent, integument without scales;  paired appendages

Cyclostomata

 

Incorrect

Option 2)

Body covered with feathers; skin moist and glandular; fore-limbs form wings; lungs with air sacs

Aves

 

Incorrect

Option 3)

Mammary gland; hair on body;  pinnae; two pairs or limbs

Mammalia

 

Incorrect

Option 4)

Mouth ventral; gills without operculum; skin with placoid scales; persistent notochord

Chondrichthyes

 

Correct

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Plabita

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