Explain how excretion takes place in a cockroach.
(N/A) $\rightarrow$ In cockroaches,excretion is carried out by Malpighian tubules. Each tubule is lined with glandular and ciliated cells. They absorb nitrogenous waste products from the hemolymph and convert them into uric acid,which is then excreted out through the hindgut. Therefore,this insect is called uricotelic.
$\rightarrow$ In addition to Malpighian tubules,the fat body,nephrocytes,and urecose glands also assist in the process of excretion.
$\rightarrow$ Some excretory substances are stored in the chitinous exoskeleton and are removed from the body during the process of moulting (ecdysis).
$\rightarrow$ In addition to Malpighian tubules,the fat body,nephrocytes,and urecose glands also assist in the process of excretion.
$\rightarrow$ Some excretory substances are stored in the chitinous exoskeleton and are removed from the body during the process of moulting (ecdysis).
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Identify $P, Q$, and $R$ in the given diagram of the male reproductive system of a cockroach.
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View SolutionMatch the following columns regarding the anatomy of a cockroach:
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| Column-$I$ | Column-$II$ |
|---|---|
| $P$. Seventh sternum | $I$. Boat-shaped |
| $Q$. Eighth and ninth sterna | $II$. Anal styles |
| $R$. $10$th segment | $III$. Genital pouch |
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View SolutionWhich of the following statement$(s)$ is/are correct regarding the digestive system of cockroach?
$(i)$ Mouth opens into a short tubular pharynx,leading to a narrow tubular passage called oesophagus.
$(ii)$ Gizzard helps in grinding the food particles.
$(iii)$ $A$ ring of $6-8$ blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut,which secrete digestive juice.
$(iv)$ At the junction of midgut and hindgut is present another ring of $100-150$ yellow coloured thin filamentous Malpighian tubules which help in removal of excretory products from haemolymph.
$(i)$ Mouth opens into a short tubular pharynx,leading to a narrow tubular passage called oesophagus.
$(ii)$ Gizzard helps in grinding the food particles.
$(iii)$ $A$ ring of $6-8$ blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut,which secrete digestive juice.
$(iv)$ At the junction of midgut and hindgut is present another ring of $100-150$ yellow coloured thin filamentous Malpighian tubules which help in removal of excretory products from haemolymph.
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