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Question

Number of alary muscles in Cockroach is


A

7

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B

9

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C

12

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D

13

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Solution

The correct option is C

12


The correct option is C.

Explanation for the correct option:

  1. In cockroaches, the alary muscle is found in the heart wall and aids in blood circulation.
  2. Cockroaches have alary muscles that are connected to their blood vessels.
  3. The cockroach has an open and lacunar blood circulatory system.
  4. There are 12 pairs of alary muscles.
  5. It aids in the heart's alternate contraction and relaxation.
  6. The pulsations of the heart produce the pumping action that pushes the hemolymph.
  7. This force is increased by abdominal breathing motions and alary muscle contractions.

Final answer: Number of alary muscles in Cockroach is 12 pairs.


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