Q. Analyse the following statement and identify the correct option given below I. In diatoms the walls are embedded with silica and thus, the walls are indestructible II. Diatoms have left behind large amount of cell wall deposits in their habitat, this accumulation over billions of year is referred to as diatomaceous deposition or diatomaceous earth
A) I is true, but II is false
B) I is false, but II is true
C) I and II are true
D) I and II are false
Explanation
I and II are true. The siliceous cell walls of diatoms are indestructible (i.e., do not decay easily). They were collected over millions of years on the sea floors, called diatomite or diatomaceous earth or silica gel. These deposits may extends for several hundred metres in certain areas
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.