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In cockroaches the number of ganglia are
Option: 1
Two pairs thoracic and four pairs abdominal
Option: 2
Three pairs thoracic and five pairs abdominal
Option: 3
Three pairs thoracic and six pairs abdominal
Option: 4
One pair thoracic and two pairs abdominal
Answers (1)
Nervous System and Sense Organs in Arthropods -
- They possess a well-developed nervous system which is situated ventrally.
- Three pairs thoracic and six pairs abdominal ganglia are present.
The following sense organs can be seen:
- Insects possess compound eyes that form the mosaic vision
- Antennae perceive smell and touch
- Taste receptors are present in the feet
- Balancing organs called statocysts are also present
-
Insects possess compound eyes that form the mosaic vision
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