Which of the following element is not an essential micronutrient for plant growth?
Mn
Zn
Ni
Ca
Which of the following is a nitrogen-fixing organism ?
BGA
Rhizobium
Both BGA and Rhizobium
Aspergillus
The minerals involved in water-splitting reaction during photosynthesis are
Magnesium and chlorine
Potassium and manganese
Manganese and chlorine
Copper and chlorine
If water enters in a cell, the pressure exerted by its swollen protoplast is
Turgor pressure
DPD
Osmotic pressure
Imbibition
The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in the leguminous root nodules is
Amminase
Nitrogenase
Nitrate reductase
Nitric reductase.
Plasmolysis is the result of
Exosmosis
Endosmosis
Reverse osmosis
Diffusion
Which type of water is used by the plants?
Gravitational water
Capillary water
Hygroscopic water
Bound water
Boron in green plants assists in
Photosynthesis
Sugar transport
Activation of enzymes
Acting as enzyme cofactor
Assertion: Deficiency of sulphur causes chlorosis in plants.
Reason: Sulpur is a constituent of chlorophyll, proteins and nucleic acids
Both Assertion and Reason are true and Reason is the correct explanation of Assertion
Both Assertion and Reason are true but Reason is not correct explanation of Assertion.
Assertion is true but Reason is false
Both Assertion and Reason are false
Guttation is mainly due to
Root pressure
Osmosis
Transpiration
