(A) In earthworms $(Pheretima)$,the alimentary canal is a straight tube. The gizzard is a muscular,thick-walled structure located in the anterior part

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(A) In earthworms $(Pheretima)$,the alimentary canal is a straight tube. The gizzard is a muscular,thick-walled structure located in the anterior part of the digestive tract. Its primary function is the grinding of decaying leaves and organic matter (food) into smaller particles,which facilitates easier digestion.

Class 11 Biology Structural Organisation In Animals Anatomy of Earthworm

Easy

What is the function of the gizzard in earthworms?

A
Grinding of food
B
Secretion of digestive juices
C
Absorption of food
D
Capturing of food

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Class 11 Questions

Class 11

Biology Questions

Chapter

Structural Organisation In Animals

Subtopic

Anatomy of Earthworm

Select the incorrect statement regarding nephridia in earthworms.

Medium

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Why is the nerve ring considered the brain of the earthworm?

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How many genital pores are present in an earthworm?

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Match the following columns regarding the types of nephridia in earthworms:

Column-$I$ Column-$II$

$P$. Septal nephridia $I$. $15^{th}$ segment to the last segment

$Q$. Integumentary nephridia $II$. $4^{th}, 5^{th}$ and $6^{th}$ segments

$R$. Pharyngeal nephridia $III$. $3^{rd}$ segment to the last segment

Column-$I$	Column-$II$
$P$. Septal nephridia	$I$. $15^{th}$ segment to the last segment
$Q$. Integumentary nephridia	$II$. $4^{th}, 5^{th}$ and $6^{th}$ segments
$R$. Pharyngeal nephridia	$III$. $3^{rd}$ segment to the last segment