(B) In the alimentary canal of an earthworm ($Pheretima$ $posthuma$), the $Gizzard$ is a specialized muscular organ.Its primary function is to grind t

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(B) In the alimentary canal of an earthworm ($Pheretima$ $posthuma$), the $Gizzard$ is a specialized muscular organ.Its primary function is to grind the soil and decaying organic matter.To withstand the abrasive nature of the food particles, the inner lining of the $Gizzard$ is covered by a thick, protective layer known as the $cuticle$.

Class 11 Biology Structural Organisation In Animals Anatomy of Earthworm

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Which structure in the alimentary canal of an earthworm is lined by an internal cuticle?

A
Pharynx
B
Gizzard
C
Intestine
D
Stomach

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Class 11 Questions

Class 11

Biology Questions

Chapter

Structural Organisation In Animals

Subtopic

Anatomy of Earthworm

$A$ - Earthworms are farmer's friends.
$R$ - They help in the breakdown of complex organic matter as well as in loosening of the soil.

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The chloragogen cells of $Pheretima$ perform a function similar to which organ in vertebrates?

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Why are nephridia in earthworms,which are basically similar in structure,classified into three types? Mention the names of each.

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Distinguish between the following: Septal nephridium and pharyngeal nephridium.

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$P$ (Assertion): Earthworms have a closed type of circulatory system.
$Q$ (Reason): Earthworms have hemoglobin dissolved in their blood plasma.

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Which structure in the alimentary canal of an earthworm is lined by an internal cuticle?

Similar Questions

$A$ - Earthworms are farmer's friends.$R$ - They help in the breakdown of complex organic matter as well as in loosening of the soil.

The chloragogen cells of $Pheretima$ perform a function similar to which organ in vertebrates?

Why are nephridia in earthworms,which are basically similar in structure,classified into three types? Mention the names of each.

Distinguish between the following: Septal nephridium and pharyngeal nephridium.

$P$ (Assertion): Earthworms have a closed type of circulatory system.$Q$ (Reason): Earthworms have hemoglobin dissolved in their blood plasma.

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$A$ - Earthworms are farmer's friends.
$R$ - They help in the breakdown of complex organic matter as well as in loosening of the soil.

$P$ (Assertion): Earthworms have a closed type of circulatory system.
$Q$ (Reason): Earthworms have hemoglobin dissolved in their blood plasma.