Alary muscles in cockroach are associated or connected with .................

Trachea

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Heart

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Legs

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Alimentary cana

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Solution

The correct option is B Heart
There is tubular dorsal heart in cockroach. The heart is placed in the pericardial sinus. There are pair of alary muscles which are present in these regions. They are attached laterally to the walls of each chamber of the heart. They connect the heart to the walls of the body and the pericardial sinus. Peristaltic contractions of these muscles force the hemolymph forward from chamber to chamber. This helps in the circulation of the hemolymph in the body of cockroach.
Thus, the correct answer is option B.

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Q. Match the following columns with reference to cockroach and select the correct option:

Column - I	Column - II
(a) Grinding of the food particles	(i) Hepatic caeca
(b) Secrete gastric juice	(ii) $10^{t h}$ segment
(c) 10 pairs	(iii) Proventriculus
(d) Anal cerci	(iv) Spiracles
	(v) Alary muscles

Read the paragraph and fill the blanks with the correct option sequence:

The blood vascular system of a cockroach is of ___(i)___ type, as blood flows in the body cavities. The generalised body cavity is called ____(ii)____. Blood is colourless due to the absence of ____(iii)____. The heart is ____(iv)____ and works in coordination with alary muscles for contractions and dilations.

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