Strategies For Enhancement In Food Production Question 318
Question: Pearl is secreted by
Options:
A) Nacreous layer
B) Prismatic layer
C) Mantle layer
D) Both a and b
Show Answer
Answer:
Correct Answer: C
Solution:
The nacreous layer is also known as mother of pearl.
This layer is secreted by the whole surface of the mantle and is a smooth lustrous surface.
The pearl is secreted by this layer as a protection against foreign body such as parasite or a sand particle.
BETA
