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Which of the following is not a protocho...

Which of the following is not a protochordate?

A

Herdmania

B

Amphioxus

C

Salpa

D

Petromyzon

Text Solution

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The correct Answer is:
D
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Knowledge Check

  • Which of the following is not true?

    A
    `~(p harr q) equiv(p ^^~ q) vv(~ p ^^ q)`
    B
    `p rarr(q ^^ r) equiv(p rarr q) ^^(p rarr r)`
    C
    `[(p rarr q) ^^(q rarr r)] rightarrow p rarr r` is a tautology
    D
    (~p` ^^ ~ q) harr (p rarr q) is a tautology

  • Which of the following is true ?

    A
    Magnetic field exerts a force only on a moving charge.
    B
    Magnetic field exerts a force on a charge moving parallel to the direction of the field .
    C
    Magnetic field exerts a force on a charge-moving perpendicular to the direction of the field .
    D
    All the above

  • Which of the following is not true ?

    A
    1.The alkaline earth metals always form dipositive ions
    B
    2.The compounds of alkaline earth metals are less soluble in water than the corresponding alkali metals.
    C
    3.The hydrides of alkaline earth metals are reducing agents
    D
    4.In the solid state, `BeCl_(2)` exists as linear molecule.

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