The diagram given below shows the schematic relations of temperature and precipitation of tropical climatic type over land : Arrange the climatic types in the correct sequence from left to right: 1. Monsoon tropics 2. Wet and dry tropics 3. Arid and semiarid 4. Rainy tropics Select the correct answer using the code given below.

The schematic relations of tropical climates over land are determined by the transition from high precipitation and low temperature range to low precipitation and high temperature range. The 'Rainy Tropics' (Af) are characterized by high annual rainfall (>200 cm) and minimal temperature variation [1]. 'Monsoon Tropics' (Am) follow, featuring heavy seasonal rainfall but a short dry period [2]. 'Wet and Dry Tropics' (Aw), or Savanna, have a more pronounced dry season and lower total precipitation than the monsoon type [1]. Finally, 'Arid and Semi-arid' (B) regions represent the driest extension, where precipitation is minimal and temperature ranges are highest [1]. Therefore, moving from the most humid to the driest tropical types (left to right in a typical moisture-gradient diagram), the sequence is Arid and Semi-arid (3), Wet and Dry Tropics (2), Monsoon Tropics (1), and Rainy Tropics (4).

Sources

1. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 30: Climatic Regions > Köppen–Geiger Climate Classification > p. 422
2. [2] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 11: World Climate and Climate Change > Group A : Tropical Humid Climates > p. 92