1.
Yellowing of leaves is called
A
Tylosis
B
Chlorosis
C
Necrosis
D
Florosis
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52 practice sets · Page 1 of 3
Yellowing of leaves is called
Tylosis
Chlorosis
Necrosis
Florosis
Write an example of bacteria and the process which is responsible for reducing nitrates togaseous nitrogen ?
Agrobacterium and Nitrification
Pseudomonas and Agrobacterium
Nitrosomonas and Denitrification
Agrobacterium and Denitrification
Which substances of soil water are degraded gradually by, atmosphere and microorganisms ?
Organic material
inorganic material
elements
positive ions
Which of the following is not related with intra cellular fluid ?
Mn
Mg
Mo
Na
Which method of hydroponics used for raising plants in solution filled containers such as a glass, jars, buckets, tubs and water tanks ?
static solution culture
nutrient film technique
Aeroponics
tissue culture
Which method of hydroponics is used for providing nutrients to plants or seedlings in environment saturated with fine droplets of nutrients ?
Aeroponics
Continousflow of cultured solution
Static cultured solution
Suspension culture
Which is the true statement for the vanadium element ?
deficiency do not regulate the size of stomata.
It is united in the formation of bipolar spindle during cell division.
plant do not get ammonia from the soil, due to its deficiency.
It plays role as structural component of vitamin Biotin and thiamin.
Which is proper pair of ions and its deficiency symtoms ?
Nitrogen - Induction of dormancy
Potassium - Scorched look to leaves
Phosphorous - Chlorosis
Zinc - Brown spoted of fruit
Which is improper pair of the following ?
Ionic balance in plants - Na
Cell wall component - B
Activation of Nitrogenase - Cu
Required for iron absorption - Ni
Which is correct statement for Active transport ?
It occurs in the concentration gradient so ATP is not required.
It occurs in the concentration gradient so ATP is required.
It occurs against the concentration gradient so ATP is not required.
It occurs against the concentration gradient so ATP is required.
Which inorganic substance is obtained by - fraction ?
Ammonium
amino acid
Ammonia
Ammonium Hydroxide
Which group is included in micronutrients ?
Mn, Cu, Mo
Cl, Ni, Co, Mg
C, H, O, N
Cl, S, Ni, Fe
Which group is included in Macronutrients?
H, Mn, S
S, P, Ca, Mg
Mn, Cu, N
Na, Cl
Which elements play significant role in structure and synthesis ofchlorophyll ?
Fe, Ca
Fe, Mg
Cu, Fe
Mg, Fe
Which element is required for photolysis of water during photosynthesis ?
Mo
Co
Cu
Cl
Which element is required for absorption and utilization of calcium ?
Fe
Cu
B
K
Which element is necessary to stabilize ribosomes ?
Mn
Mg
Mo
Ni
Which element is necessary for meristmatic tissue and differentiating tissues ?
Fe
N
Ca
B
Which element deficiency shows bronzing leaves ?
K
N
Ca
S
Which amino acid is formed when a keto - glutaric acid reacts with during transmmination ?
Glutanic acid
Aspartic acid
Oxalo-acetic acid
None of these