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MODEL PAPER 6 — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYMODEL PAPER 61 Mark
MCQ
Which excretory organ is used by cockroaches?
  • A
    Malpighian tubules
  • B
    Protonephridia
  • C
    Kidneys
  • D
    Nephridia
✓

Answer

(a) Malpighian tubules
Explanation: The excretory organ of cockroach is the malpighian tubules. It is found at the junction of the midgut and hindgut and is about 150 in number. They are fine, yellow coloured and branched threads present in bundles. They lie freely in the haemolymph.

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Similar questions

Match the excretory organs listed under column $I$ with the animals given under column $II$. Choose the answer which gives the correct combination of alphabets of the two columns. 

Column $I$

$(Excretory\, organs)$

Column $II$

$(Animals)$

$A.$ Nephridia                

$p$ Hydra

$B.$ Malpighian tubules     

$q$ Leech

$C.$ Protonephridia

$r$ Shark

$D.$ Kidneys

$s$ Round worms

$t$ Cockroach
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