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Assertion: Branchiostoma and Balanogloss...

Assertion: Branchiostoma and Balanoglossus are bilaterally symmetrical and triploblastic animals.
Reason: They are exclusively marine and possess notochord

A

If both assertion and reason are true and the reason is the correct explanation of the assertion

B

If both assertion and reason are true but reason is not the correct explanation of the assertion

C

If assertion is true but reason is false

D

If both assertion and reason are false

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The correct Answer is:
C
Balanoglossus (Phylum-Hemichordata) and Branchiostcma (= Amphioxus, Subphylum-Cephalochordata) both are bilaterally symmetrical and triploblastic animals. Both are marine animals. Balanoglossus does no possess a notochord whereas Branchiostoma being a chordate possesses notochord that persists throughtout life.
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