Which of the following is not true about soil?
P. Soil not only supplies minerals but also harbours Nitrogen fixing bacteria and other microbes
Q. It holds water
R. It supplies air to the roots
S. It acts as a matrix that stabilises the plant
T. It is a source of photosynthate
U. It is positively geotropic without any exception

1. S, T and U
2. T and U
3. S and U
4. R and T

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