Q. Which among the following statements is/are correct about soil profile?

1. The different layers of the soil are arranged in a horizontal manner, which is known as the soil profile.
2. The topmost horizon is usually dark in colour. 

Select the correct code from the options given below:
Answer: Only 2
Notes: The different layers of the soil are arranged in a vertical manner, which is known as the soil profile. Each layer differs the ones adjacent to it in terms of colour, texture, chemical composition, and depth. Each layer of the soil is termed a horizon. The topmost horizon is usually dark in colour. It contains humus, which is decomposed organic matter, and various minerals.