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In higher chordates, pharyngeal gill sli...

In higher chordates, pharyngeal gill slits are

A

Absent

B

Present in the embryo

C

Replaced by abdominal gill slits

D

Replaced by thoracic gill slits

Text Solution

Verified by Experts

The correct Answer is:
B
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Name the phylum in which pharyngeal gill slits are present but notochord is absent.

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Knowledge Check

  • Pharyngeal gill slits are dorsal in

    A
    Cephalochordates
    B
    Urochordates
    C
    Hemichordates
    D
    Euchordates

  • Pharyngeal gill-slits are found in

    A
    Cray fish
    B
    Cuttle fish
    C
    Flying fish
    D
    Silver fish

  • Pharyngeal gill-slits are found in

    A
    Cray fish
    B
    Dog fish
    C
    Cuttle fish
    D
    Silver fish

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    Vertebrates are characterized by (i) presence of true coelom (ii) presence of notochord (iii) a ventrally placed heart (iv) the pharyngeal gill slits at some stage in life cycle (v) RBCs.

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