Question

Mottled chlorosis occurs due to deficiency of:
A. Nitrogen
B. Phosphorus
C. Potassium
D. Sulphur

Answer 1

Hint: Chlorosis is a condition wherein leaves produce lacking chlorophyll. Chlorophyll stands for the green shade of leaves. Chlorotic leaves are pale, yellow, or yellow-white. The influenced plant has almost no capacity to make starches through photosynthesis and may kick the bucket except if the reason for its chlorophyll inadequacy is dealt with and this may prompt a plant sickness called rusts

Step by step answer:Potassium is a macronutrient required by the plant as potassium particles. It has a significant part in the opening and shutting of stomata and parity of particles. It additionally helps in keeping up the bloat of the cells. Its insufficiency can cause chlorosis, putrefaction, and restraint of cell division in plant cells. Frequently, potassium inadequacy manifestations initially show up on more established (lower) leaves since potassium is a portable supplement, implying that a plant can dispense potassium to more youthful leaves when it is K lacking.
 So the right answer is 'Potassium'.
The nitrogen inadequacy implies that it may be generally simple to distinguish in some plant species. Side effects incorporate poor plant development, and leaves become light green or yellow since they can't make adequate chlorophyll. Leaves in this state are supposed to be chlorotic.
Crops show no undeniable manifestations of phosphorus lack other than an overall hindering of the plant during early development.
Sulfur insufficiency manifestations from various perspectives take after those of nitrogen - that is, the leaves become light yellow or light-green. In contrast to nitrogen, sulfur - lack side effects show up first on the more youthful leaves and persevere even after nitrogen application.
Hence, the correct option is C

Note: The common indications of potassium insufficiency in plants incorporate brown searing and twisting of leaf tips. It is just as chlorosis (yellowing) between leaf veins. Purple spots may likewise show up on the leaf undersides. Plant development, root improvement, and seed and organic product advancement are generally diminished in potassium-inadequate plants.