Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYStructural Organisation in Animals1 Mark
MCQ
Excretory organs of Cockroach are:
A
Flame cells
B
Nephridia
C
Green glands
✓
Malpighian tubules
✓
Answer
Correct option: D.
Malpighian tubules
Excretion is performed by Malpighian tubules.
Each tubule is lined by glandular and ciliated cells.
They absorb nitrogenous waste products and convert them into uric acid which is excreted out through the hindgut.
Therefore, this insect is called uricotelic.
The fat body nephrocytes and urecose glands also help in excretion.
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