One direct use of earthworms to farmers is:
- AAllowing sunlight to pass in upper layers of soil
- BEnrichment of soil by nephridial excretions
- CRemoval of dead leaves
- DKilling of some harmful insects
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In which segments is the clitellum present in an earthworm?
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View SolutionThe prostomium is $...............$
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View SolutionChoose the correct pair regarding the anatomy of an earthworm:
Column-$I$ Column-$II$ $1$. Spermathecae $a$. $6^{th}$ to $9^{th}$ segments $2$. Typhlosole $b$. $1^{st}$ to $3^{rd}$ segments $3$. Buccal cavity $c$. $26^{th}$ to $35^{th}$ segments in intestine $4$. Pharyngeal nephridia $d$. $4^{th}$ to $6^{th}$ segment
| Column-$I$ | Column-$II$ |
| $1$. Spermathecae | $a$. $6^{th}$ to $9^{th}$ segments |
| $2$. Typhlosole | $b$. $1^{st}$ to $3^{rd}$ segments |
| $3$. Buccal cavity | $c$. $26^{th}$ to $35^{th}$ segments in intestine |
| $4$. Pharyngeal nephridia | $d$. $4^{th}$ to $6^{th}$ segment |
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