A part of the rock forming material of the earth comprises:

Related Mcqs:

1. The rock cover of the earth is called:

   A. Lithosphere
   B. Xerosphere
   C. Pasmmosphere
   D. Pedosphere

2. The calcium carbonate content which is usually between 6 and 10%, has reached into the deeper layers, forming a zone of lime nodules (Kankar) at about _____ depth:

   A. 70-100 cm
   B. 80-110cm
   C. 90-120 cm
   D. None of these

3. If there were no CO2 in the earth’s atmosphere, the temperature of earth’s surface would have been:

   A. same as present
   B. Less than the present
   C. Higher than the present
   D. Dependent on the amount of O2 in the atmosphere

4. Geology is the study of earth. Earth’s crust is divided into:

   A. Ocean
   B. Continents
   C. Both (a) & (b)
   D. None of these

5. Development of soil from the parent rock is termed as:

   A. Edaphotropism
   B. Edaptic factor
   C. Pedogenesis weathering
   D. Edaphic climax

6. Plants growing in rock crevices are called:

   A. Sciophytes
   B. Chasmophytes
   C. Helophytes
   D. None of these

7. Development of soil from parent rock is termed as:

   A. Edaphic factor
   B. Pedogenesis
   C. Edaphotropism
   D. Edaphic climax

8. A biotic community comprises:

   A. Plants only
   B. Animals only
   C. Plants and animals
   D. Plants or animals

9. Many forested regions of today were once barren rock areas. Mot likely this change involved the following sequence of stages:

   A. Lichens-mosses-annual herbs-wood shrubs
   B. Annual herb-weedy shrubs-lichens-mosses
   C. Woody shrubs-mosses-lichens-annual herbs
   D. Mosses-annual herbs-woody shrubs-lichens

10. The soil cover of the earth lies between:

    A. Atmosphere and lithosphere
    B. Lithosphere and biosphere
    C. Atmosphere and hydrosphere
    D. All of these