Mineral Nutrition Of Plants

Question 1

What is nutrient element

Answer 1

Is one that is required to complete the lifecycle of an organism

Question 2

Soil nutrient element which are distributed in different discrete chemical forms exists in which state

Answer 2

Dynamic equilibrium

Question 3

“Soil available from of a nutrient is that fraction whose variation in amount is responsible for significant changes in yield and response”This is given by

Answer 3

Bray (1948)

Question 4

Nutrient available to biological organism

Answer 4

Bioavailable nutrient

Question 5

Mineral elements which stimulate plant growth but are not Essential but only essential for a few plant is called

Answer 5

Beneficial element

Question 6

Beneficial element example

Answer 6

Silicon,sodium, aluminium,cobalt,selenium,vanadium

Question 7

Functional nutrient termed by

Answer 7

Nicholas 1961

Question 8

What is the definition of functional element

Answer 8

That plays role in plant metabolism

Question 9

Trace elements

Answer 9

Element found in low concentrations
Less than 1 ppm

Question 10

Tracer element

Answer 10

Radioisotope or stable isotope of an element used for tracing its path in a system to study it’s mechanism of its interaction with the system

Question 11

Heavy metal

Answer 11

Metal having specific gravity 5.0 or having atomic number higher than 20

Question 12

Any metal higher than calcium is a which metal

Answer 12

Heavy metal

Question 13

Nutrient content

Answer 13

Concentration of nutrient or its amount per unit weight of a plant tissue is termed as nutrient content

Question 14

How to convert percentage to ppm

Answer 14

By multiplying with 10^ 4

Question 15

Nutrient accumulation

Answer 15

Storage of a nutrient in a part of portion of the plant is called nutrient accumulation

Question 16

Nutrient uptake

Answer 16

Amount of nutrient taken up by the growing crops from either the soil or other source is called nutrient uptake.

Question 17

Nutrient removal

Answer 17

The nutrient contained in the harvested portion of the crop is termed as the nutrient removed.

Question 18

Essential nutrients

Answer 18

Elements needed by the plant without which it will not be able to survive.

Question 19

Criteria of essentiality given by

Answer 19

Arnon and stout (1939)

Question 20

Essential nutrients

Answer 20

C,H,O,N,P,K,Ca,Mg,S,Fe,Mn,Zn,Cu,B,Mo,Cl,Ni

Question 21

Latest addition to the list of Essen nutrients are done in

Answer 21

1987

Question 22

Micronutrients

Answer 22

Required in less quantities

Question 23

Macronutrients e

Answer 23

C,H,O,N,P,K, Ca,Mg,S

Question 24

H and O contains how much amount of the plant dry matter

Answer 24

90-95%

Question 25

Primary nutrients

Answer 25

Required in larger amount(NPK)

Question 26

Secondary nutrient

Answer 26

Required in moderate amount (Ca,Mg,S)

Question 27

Micronutrients

Answer 27

Which are required in relatively smaller quantities

Question 28

Example of micronutrients

Answer 28

Fe,Mn,Zn,Cu,B,Mo,Cl,Ni

Question 29

Examples of micronutrients anion

Answer 29

B,Mo,Cl

Question 30

Examples of micronutrients cation

Answer 30

Fe,Mn,Zn,Cu,Ni

Question 31

Nitrogen is absorbed by plant roots as

Answer 31

NO3-

Question 32

In case of rice nitrogen is absorbed as

Answer 32

NH4+

Question 33

Concentration of Nitrogen

Answer 33

1-5%(10000-50000 ppm or mg/kg)

Question 34

Which nutrient is most often deficient in soil

Answer 34

Nitrogen

Question 35

Which is a major component of plant cell and cell wall

Question 36

The latter contains

Answer 36

5% N

Question 37

Which is an essential component of amino acid, protein, nucleic acid,porphyrins,flavins,purines,pyrimidines, nucleotides

Answer 37

Nitrogen

Question 38

Nitrogen containing chlorophyll in the presence of solar energy fixes atmospheric CO2 as

Answer 38

Carbohydrates

Question 39

What is responsible for the transfer of genetic code to the offspring

Answer 39

Nitrogen

Question 40

Which nutrient improves the quality of leafy vegetables

Answer 40

Nitrogen

Question 41

Which fertilization improves protein quality of the food grain and by enhancing which proportion

Answer 41

Nitrogen(glutamic acid,proline,phenylalanine,cystine, methionine,and tyrosine )

Question 42

What are the things whose amount can be decreased by using nitrogen

Answer 42

lysine, histidine,arginine, aspartic acid , aspartic acid,threonine, glycine,valine and leucine

Question 43

Plant having how much percentage of nitrogen are regarded as nitrogen deficient

Answer 43

Less than 1%

Question 44

Main symptoms of Nitrogen deficiency

Answer 44

Stunted growth

Question 45

Nitrogen deficiency symptoms first occurs in

Answer 45

Older leaves(light green to pale yellow coloration- through proteolysis)

Question 46

Reduction in crop yield,protein content and flowering are associated with

Answer 46

N-deficiency

Question 47

Succulence of the plant increases by

Answer 47

Large nitrogen availability

Question 48

Which is the second most abundant mineral in human body

Answer 48

Phosphorous

Question 49

Plant absorb phosphorus as

Answer 49

Dehydrogen orthophosphate ion (H2PO4)

Question 50

Under neutral to alkaline environment phosphorous is taken up as

Answer 50

Monohydrogen orthophosphate (HPO4 ^2-)

Question 51

P gets absorbed in which organic form

Answer 51

Nucleic acid and phytins

Question 52

In normal p sufficient plant p content varies from

Answer 52

0.1-0.4% by weight which is 1/5th to 1/10th of N and K

Question 53

Which are the energy currency of the cell

Answer 53

Atp and Adp

Question 54

Energy stored by ATP

Answer 54

12 Kcal energy per mole contained in two pyrophosphate bond between 3 p molecules

Question 55

Which is designated as p deficient

Answer 55

0.1% or 100 ppm

Question 56

Why p easily translocate from older tissue to meristematic tissue

Answer 56

Because of the faster mobility in plant