1.  Due to which type of bacteria atmospheric N2 is maintained ?

A. Nitrosomonas

B. Rhizobium

C. Nitrobacter

D. Pseudomonas

Answer : Option D

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2.  Which method of hydroponics is used for providing nutrients to plants or seedlings in environment saturated with fine droplets of nutrients ?

A. Aeroponics

B. Continous flow of cultured solution

C. Static cultured solution

D. Suspension culture

Answer : Option A

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3.  Yellowing of leaves is called -

A. Tylosis

B. Chlorosis

C. Necrosis

D. Florosis

Answer : Option B

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4.  Standards for mineral elements essentially was suggested by which scientist ?

A. Julious Vonsachs

B. Cornelius Von

C. Arnon and Stout

D. Jhon Ingen house

Answer : Option C

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5.  What is concentration of micronutrients in the dry mass of plants per gram ?

A. 1 to 10 mg

B. 0.1 mg

C. 0.1 mg or less than that

D. 10 mg or more than that

Answer : Option C

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6.  Which group is included in Macronutrients?

A. H, Mn, S

B. S, P, Ca, Mg

C. Mn, Cu, N

D. Na, Cl,

Answer : Option D

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7.  Which group is included in micronutrients ?

A. Mn, Cu, Mo

B. Cl, Ni, Co, Mg

C. C, H, O, N

D. Cl, S, Ni, Fe

Answer : Option A

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8.  Out of the following, what is the function of Potasium ?

A. ion balance

B. stabilizes ribosomes

C. Required for iron absorption

D. In active site of many redox enzymes

Answer : Option A

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9.  Which element is necessary to stabilize ribosomes ?

A. Mn

B. Mg

C. Mo

D. Ni

Answer : Option B

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10.  Which elements play significant role in structure and synthesis of chlorophyll ?

A. Fe, Ca

B. Fe, Mg

C. Cu, Fe

D. Mg, Fe

Answer : Option D

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