Consider the following statements 1 Laterite soils are formed due to the heat combined with the rate...........

Geography World - Soil and Vegetation

Consider the following statements:

1) Laterite soils are formed due to the heat combined with the rate of alternation between wet and dry intervals of monsoon climate.

2) Hot summer and low rainfall develops black soil, irrespective of the parent rock

3) In tropical/equatorial region since biodiversity/vegetation is thick, humus content is also very high.

Which of the statements given above is/are correct?

2&3 only

1&2 only

1&3 only

All of the above

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Explanation:

Climate of an area is such a major factor that over a long period, it tends to reduce differences caused by the parent materials. That is why two different parent material may develop the same soil in one type of climatic regime.

Likewise, the same parent material may produce two different types of soil in two types of climates.
Statement 1 is correct – self explanatory; Laterite has been derived from the Latin word ‘Later’ which means brick. The laterite soils develop in areas with high temperature and high rainfall.
Statement 2 – is also correct and above explanation is the reason why black soil are found in some districts of Tamil Nadu, irrespective of the parent rock
Statement 3 – is wrong. Tropical/equatorial region consists of humid climate, therefore bacterial activity is intense. Consumption of humus is so much that soils are left poor in it.
In cold climate (temperate region), bacterial activity is limited and the soils are rich in humus.