The crust and the upper-most part of the mantle up to a depth of 200 km from the surface of the earth is called:

A. Pyrosphere

B. Osophere

C. Cyrosphere

D. Lithosphere

Answer: Option D

Solution(By Examveda Team)

The mantle extends from Moho's discontinuity (35 km) to a depth of 2,900 km (Moho-Discontinuity to the outer core). The crust and the uppermost part of the mantle are called lithosphere. Its thickness ranges from 10-200 km. The lower mantle extends beyond the asthenosphere.