Question
Biology Question on Organisms and their Environments
The least porous soil among the following is a
A
loamy soil
B
silty soil
C
clay soil
D
peaty soil
Answer
clay soil
Explanation
Solution
The correct answer is C: Clay soil
Least porous soil is clay soil. It is composed of fine particles and are tightly together and have little space between the particles. It has poor drainage and limited porosity. There is very restricted movement of air, water and nutrients. It will lead to waterlogging thus making it difficult for the plant roots to access oxygen.