Question

The minimal point of water content in the soil required for the survival of plants is called ___

• A. Field capacity
• B. Hypolimnion
• C. Thermocline
• D. Wilting point

Answer 1

The correct option is D Wilting point

The lower limit of water availability in soil below which a plant wilts is known as wilting point.
Field Capacity is the amount of soil moisture or water content held in the soil after excess water has drained away and the rate of downward movement has decreased. Thermocline is a transition line in a body of water such as a lake, marked by a layer above and below which the water is at different temperatures.
The hypolimnion or under lake is the dense, bottom layer of water in a thermally-stratified lake. It is the layer that lies below the thermocline. Typically the hypolimnion is the coldest layer of a lake in summer, and the warmest layer during winter.