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Match the items in column I and column II with regard to Periplaneta.
Column I Column II
(a) Small holes on the lateral sides (i) Ostia
(b) Small apertures in the heart (ii) Hepatic caeca
(c) Ring of 100-150 yellow coloured thin tubules (iii) Spiracles
(d) Ring of 6-8 blind tubules (iv) Malpighian tubules
(a) (b) (c) (d)
1. iii i iv ii
2. i iii iv ii
3. iii i ii iv
4. i iv iii ii

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answer is A.

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Detailed Solution

Blood from sinuses enter heart through ostia and is pumped anteriorly to sinuses again.
10 pairs of small holes called spiracles present on the lateral side of the body help in respiration.
A ring of 6-8 blind tubules called hepatic or gastric caeca is present at the junction of foregut and midgut, which secrete digestive juice.
At the junction of midgut and hindgut is present another ring of 100-150 yellow coloured thin filamentous Malpighian tubules.

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