Unit 5 - Practice Quiz

1 Which term describes the scientific study of the origin, formation, classification, and distribution of soils?

2 Which of the following is considered an 'active' factor in soil formation?

3 The vertical section of soil extending from the surface to the parent material is known as:

4 In a standard soil profile, which horizon is known as the 'Zone of Eluviation' or leaching?

5 Which soil horizon is primarily composed of organic matter such as decomposing leaves and humus?

6 The process of removal of silica from the soil and the accumulation of iron and aluminum oxides in tropical regions is called:

7 Which soil type is characteristically found in the coniferous forest belts of the sub-arctic regions?

8 Soils that are transported and deposited by agents like rivers, wind, or glaciers are known as:

9 What is the primary cause of soil salinization in arid and semi-arid regions?

10 Chernozem soils, known for being rich in humus and highly fertile, are associated with which biome?

11 Which type of soil erosion involves the uniform removal of a thin layer of soil from the land surface?

12 When rill erosion is neglected and the channels become large and deep, it transforms into:

13 Which conservation method involves ploughing across the slope rather than up and down?

14 What is the main purpose of planting shelterbelts?

15 Edaphic factors influencing the distribution of plants refer to:

16 Plants adapted to survive in dry conditions with very little water are called:

17 Which factor is primarily responsible for the 'Altitudinal Zonation' of vegetation in mountain regions?

18 The 'Wallace Line' separates the faunal regions of:

19 Which of the following is a major anthropogenic cause of deforestation?

20 The concept of 'Social Forestry' primarily aims to:

21 Agroforestry is best defined as:

22 Which type of social forestry involves farmers growing trees on their own farmland for commercial or non-commercial purposes?

23 What is 'In-situ' conservation?

24 Which soil horizon is known as the 'Zone of Illuviation' or accumulation?

25 The arrangement of soil particles into clumps or aggregates is referred to as:

26 Which biome is characterized by the highest biodiversity?

27 Mangrove forests are typically found in:

28 The breakdown of rocks in situ without transportation is called:

29 Which gas is primarily sequestered by forests, making deforestation a contributor to climate change?

30 The 'R' horizon in a soil profile represents:

31 Which conservation measure involves constructing steps on steep slopes to prevent soil erosion?

32 Which of the following is an example of Ex-situ conservation?

33 The distinct vertical layers of soil are collectively called:

34 In the USDA Soil Taxonomy, soils with permafrost within 100 cm of the surface are classified as:

35 Which factor prevents trees from growing in the Tundra biome?

36 Extension forestry primarily involves:

37 The process where humus is formed through the decomposition of organic matter is called:

38 Which of the following plants are adapted to high salt concentrations?

39 Vertisols are characterized by:

40 Shifting cultivation (Slash and burn) is a major cause of soil degradation in:

41 The 'C' Horizon in a soil profile consists mainly of:

42 The relative proportion of sand, silt, and clay in the soil determines its:

43 Which of the following is NOT a measure to check soil erosion?

44 The interaction of all living organisms with each other and with the physical environment is called:

45 Photoperiodism affects plant distribution based on:

46 Which type of forestry involves raising trees on community land with the aim of providing benefits to the community as a whole?

47 The removal of the top layer of soil leads to the loss of:

48 Which soil forming process involves the accumulation of calcium carbonate in the soil profile?

49 What is the primary role of decomposers in an ecosystem?

50 The festival of tree planting in India, initiated to create awareness about forest conservation, is called: