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The ommatidia are present in
Option: 1
Complex eyes of cockroach
Option: 2
Combined eyes of cockroach
Option: 3
Compound eyes of cockroach
Option: 4
None of these
Answers (1)
Nervous System of Cockroach -
Nervous System of Cockroach
- The nervous system of cockroach consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
- Three ganglia lie in the thorax and six in the abdomen.
- The nervous system of the cockroach is spread throughout the body.
- The head holds a bit of a nervous system while the rest is situated along the ventral part of its body .
- The brain is represented by supra-oesophageal ganglion which supplies nerves to antennae and compound eyes.
Sense Organs
- In cockroach, the sense organs are antennae, eyes, maxillary palps, labial palps, anal cerci etc.
- Each eye consists of about 2000 hexagonal ommatidia
- With the help of several ommatidia, a cockroach can receive several images of an object.
- This kind of vision is called mosaic vision.
-
Each compound eye of the cockroach consists of about 2000 hexagonal ommatidia. With the help of several ommatidia, a cockroach can receive several images of an object. This kind of vision is called mosaic vision.
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