Question

In-plant nutrition elements are classified as major or minor depending on
A. Their availability in the soil.
B. Their relative production in the ash obtained after burning the plants.
C. Their relative amounts required by the plants.
D. Their relative importance in plant growth.

Answer 1

Hint:- Plant nourishment is the investigation of the substance components and mixes essential for plant development, plant digestion and they are outer flexibly. In its nonattendance the plant can't finish an ordinary life cycle, or that the component is important for some basic plant constituent or metabolite.

Complete Answer:-
- Plants must acquire the accompanying mineral supplements from their developing medium-
- the macronutrients: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), sulfur (S), magnesium (Mg), carbon (C), oxygen (O), hydrogen (H)
- the micronutrients (or minor elements): iron (Fe), boron (B), chlorine (Cl), manganese (Mn), zinc (Zn), copper (Cu), molybdenum (Mo), nickel (Ni)
- These components remain underneath soil as salts, so plants burn-through these components as particles.
- The macronutrients are burned-through in bigger amounts; hydrogen, oxygen, nitrogen and carbon add to over 95% of a plant's whole biomass on a dry issue weight premise.
- Micronutrients are available in plant tissue in amounts estimated in parts per million, going from 0.1[3] to 200 ppm, or under 0.02% dry weight.[4]
- Most soil conditions over the world can give plants adjusted to that atmosphere and soil with adequate sustenance for a total life cycle, without the expansion of supplements as compost.
- Nonetheless, if the dirt is edited it is important to falsely change soil fruitfulness through the expansion of manure to advance fiery development and increment or continue yield.
- This is done on the grounds that, even with sufficient water and light, supplement lack can restrict development and harvest yield.
- In any event, 17 components are known to be basic supplements for plants. In moderately enormous sums, the dirt supplies nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur; these are regularly called the macronutrients.
- In moderately modest quantities, the dirt supplies iron, manganese, boron, molybdenum, copper, zinc, chlorine, and cobalt, the alleged micronutrients.

So, the correct answer is “option -C”

Note:- The Earth's climate contains more than 78 percent nitrogen. Plants called vegetables, including the horticultural yields hay and soybeans, broadly developed by ranchers, harbor nitrogen-fixing microorganisms that can change over atmospheric nitrogen into nitrogen the plant can utilize. Plants not named vegetables, for example, wheat, corn, and rice depend on nitrogen mixes present in the dirt to help their development.