Why is that in certain plants deficiency symptoms appear first in younger parts of the plant while in others they do so in mature organs?

Name at least five different deficiency symptoms in plants. Describe them and correlate them with the concerned mineral deficiency.

Why is the bottom of a tea kettel blackended while its upper part is so polished?

Mention two symptoms of nitrogen deficiency in plants.

Explain why The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heaf

Two vessels have the same base area but different shapes. The first vessel takes twice the volume of water that the second vessel requires to fill upto a particular common height. Is the force exerted by the water on the base of the vessel the same in the two cases? If so, why do the vessels filled with water to that same height give different readings on a weighing scale?

An element is involved in the formation of mitotic spindle. Which part of the plant do you expect it to be present? Why? Name the element. Where else can it be present?

If a plant shows a symptom which could develop due to deficiency of more than one nutrient, how would you find out experimentally, the real deficient mineral element?