MCQ
Nephridia found in Pheretima are:
- AProtonephridia
- BSolenocytes
- CMicronephridia
- DMeganephridia
Explanation:
Nephridia in Pheretima are of the micronephridic type.
Micronephridia is smaller in size, sometimes microscopic and are numerous in each segment.
They are networks of fine tubes lying on the body wall and septa in each segment.
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- Chromosomes are fully condensed.
- by the end of this stage, the nucleolus disappear.
Identify this stage.