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STD 11 - 7. Structural organisation in animal — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYSTD 11 - 7. Structural organisation in animal1 Mark
MCQ
Which is characteristic of Cockroach
  • ✓
    $13-$ chambered heart
  • B
    Reduced wings
  • C
    Cocoon formation
  • D
    Segmented body
✓

Answer

Correct option: A.
$13-$ chambered heart
a
(a)The heart of cockroach is formed of  $ 13 $ chambers each chamber (except the last one) has a pair of small lateral apertures called ostia which open into the pericardial sinus.

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