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?

How are the terms 'critical concentration' and 'deficient different from each other in terms of, concentration of an essential element in plants? Can you find the values of 'critical concentration' and 'deficient' for minerals — Fe & Zn.

Read the paragraph and answer the questions given below : Reproduction is the process by which the living Species continues its existence. Lower organisms carry out asexual reproduction while higher plants and animals always show sexual reproduction. Plants reproduce asexually by methods such as fragmentation, vegetative propagation, budding, Spore formation. For sexual reproduction they form gametes. In animal kingdom, budding, fission of different types and parthenogenesis are some of the methods that do not require both the sexes. Though regeneration also forms new individual, it is not considered to be a reproductive process because. basically it is a repair process. The ability to regenerate is lost in higher phyla. In human beings it is restricted only to wound healing. Sexual reproduction is also undergoing lots of experimentation such as cloning which may make females capable of producing their own baby without intervention of any male. Answer the follolwing question. How do living species continue their existence?

Deficiency symptoms of an element tend to appear firstin youngleaves.It indicatesthat the element is relatively immobile. Which one of the following elemental deficiency would showsuch symptoms?

Which of the following statements are true? If false, correct them: (a) Boron deficiency leads to stout axis. (b) Nitrogen as a nutrient element, is highly immobile in the plants.

Figure shows a potentiometer with a cell of 2.0 V and internal resistance 0.40 Omega maintaining a potential drop across the resistor wire AB. A standard cell which maintains a constant emf of 1.02V (for very moderate currents upto a few mA) gives a balance point at 67.3 cm length of the wire.To ensure that very low current drawn from the standard cell,a very high resistance of 600 k Omega is put in series with it, which is shorted close to the balance point. The standard cell is then replaced by a cell of unknown emf E and the balance point found similarly,turns out to be at 82.3 cm length of the wire . Would the circuit work well for determining an extremely small emf, say of the order of a few m V (such as the typical emf of a thermo-couple) ? If not , how will you modify the circuit ?

Two pipes running together can fill a cinstern in 3 1/13 minutes.If one pipe takes 3 minutes more than the other to fill it,find the time in which each pipe would fill the cistern.