Pheretima posthuma is very useful as: | vedclass

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Question

(B) $Pheretima$ $posthuma$ (earthworm) is known as the 'friend of farmers'.They make the soil porous by burrowing,which helps in the penetration of ai

Vedclass · Accepted Answer

They make the soil porous and mix their excretory products and organic waste into the soil.

Vedclass · Answer

(B) $Pheretima$ $posthuma$ (earthworm) is known as the 'friend of farmers'.They make the soil porous by burrowing,which helps in the penetration of air and water into the soil.Additionally,they enrich the soil by mixing their nitrogenous excretory products (vermicompost) and decaying organic matter into the soil,which increases soil fertility.

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

$Pheretima$ $posthuma$ is very useful as:

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