A: The mantle of a pearl oyster is three-laye | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The mantle of a pearl oyster consists of three distinct layers: the outer periostracum,the middle prismatic layer,and the inner nacreous layer. Th

Vedclass · Accepted Answer

Assertion and Reason both are correct but Reason is not the correct explanation of Assertion.

Vedclass · Answer

(B) The mantle of a pearl oyster consists of three distinct layers: the outer periostracum,the middle prismatic layer,and the inner nacreous layer. Thus,the Assertion is true.Nacre-secreting cells (also known as mantle epithelial cells) are indeed located just below the nacreous layer to facilitate its formation. Thus,the Reason is also true.However,the fact that nacre-secreting cells are located below the nacreous layer does not explain why the mantle itself is composed of three layers. Therefore,the Reason is not the correct explanation for the Assertion.

$A$: The mantle of a pearl oyster is three-layered.
$R$: Nacre-secreting cells are present just below the nacreous layer.

Similar Questions

Which pearl is rare?

Which one of the following molluscs is cultured in fresh water for producing pearls?

Which one of the following molluscan groups is primarily used in pearl formation?

Pearl is produced by the marine molluscs such as

Natural pearl is formed by

Vedclass Test Series

Exam Paper Generator

Online Exam Module

$A$: The mantle of a pearl oyster is three-layered.$R$: Nacre-secreting cells are present just below the nacreous layer.