Question

presentation about "plant and inorganik nutrients"

Answer 1

Presentation on "Plant and Inorganic nutrients".

Introduction: Plants are autotrophic they produce their own food by absorbing water and inorganic nutrients from soil by root and CO2 from environment. Plant produce energy by photosynthesis using water, CO2 and sunlight.Plant have both organic and inorganic nutritionts.Organic nutrients get from photosynthesis and Inorganic nutrients get from soil by root absortion and nitrogen fixation.

Nitrogen Fixation is essential to plant to produce nitrogen containing organic compound like protein, amino acids, nucleic acid. Nitrogen fixation done by nitrogen fixing bacteria like azatobacter and archaewhich is present in plant roots and symbiotically and fixed the atmospheric nitrogen through series of reactions like

1)Amminofication convert atmospheric N2 into Ammonia(toxic to plant).

2)Nitrification convert Ammonia (NH4)into nitrite (NO2) and nitrite to nitrate(NO3).

3)Denitrifiaction :Nitrate is reduced to molecular nitrogen.

Root Absorption: Plant roots absorb essentional nutreints which are of two types

a) Macronutrients (H, C, O, N, K, Ca, Mg, P, S) which is present in the form of salt in soil and plant absorb in large quantity by roots. required in large amount to plant.
b)Micronutrient (Cl, b, Fe, Mn, Zn, Cu, Ni, Mo.). micronutrients are essential to plant but required in small quantity.

Inorganic Nutrient Deficiency: Inorganic nutrient deficiency decrease the plant growth rate. Magnesium deficiency causes severity of defoliation. Deficiency of  nitrogen and phosphorus affect the older parts of plants to younger parts and leaves have chlorosis (yellowing) and develop red or purple tints and the leaf tissue develop necrotic areas . Some inorganic nutrient deficiency shows short growth of internodes and leaf and flower colour changed characteristically.