Which of the following is absent in the mouthparts of a housefly?
- ALabrum
- BEpipharynx
- CMandibles
- DMaxillary palps
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The given figure shows the open circulatory system of a cockroach. Identify the structure that facilitates the flow of haemolymph by its contraction and relaxation.
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View SolutionMatch the correct pairs regarding the anatomy of a cockroach:
Column-$I$ Column-$II$ $1$. Exoskeleton $p$. Thorax $2$. Three ganglia $q$. Chitin $3$. One pair of seminal vesicles $r$. $6^{th}-7^{th}$ segments of abdomen $4$. Mushroom-shaped gland $s$. $6^{th}$ segment
| Column-$I$ | Column-$II$ |
| $1$. Exoskeleton | $p$. Thorax |
| $2$. Three ganglia | $q$. Chitin |
| $3$. One pair of seminal vesicles | $r$. $6^{th}-7^{th}$ segments of abdomen |
| $4$. Mushroom-shaped gland | $s$. $6^{th}$ segment |
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