The conversion of nitrate to nitrogen is called
Nitrification
Denitrification
Ammonification
Nitrogen fixation
Which of the following is/are not an essential micro nutrient ?
Boron
Nickel and cadmium
Molybdenum
Zinc
The water available of plants for absorption is
Gravitational water
Hygroscopic water
Capillary water
Chemically bound water
Necrosis or death of tissue particularly leaf tissue, is due the deficiency of
N, K and S
N, K, Mg and Fe
Mn, Zn, and Mo
Ca, Mg, Cu, and K
For nitrogen fixation, useful pigment is :
Nitrogenase
Haemoglobin
Myoglobin
Leghaemoglobin
Zn, Mo, Fe, Cu are
Trace elements
Non-essentials
Macronutrients
None of these
Bacteria and fungi developing on dead decaying organisms are
Parasites
Commensals
Saprophytes
Symbionts
Guttation occurs through
Lenticels
Hydathodes
Periderm
Stomata
Hydathodes are also called
Water stomata
Sunken stomata
Guard cells
Subsidiary cells
Munch hypothesis is based on
Translocation of food due to TP gradient and imbibitions force
Translocation of food due to turgor pressure (TP) gradient
Translocation of food due to imbibitions force
None of the above
