Mineral Nutrition

Question 1

Founder of hydroponics

Answer 1

Julius Von Sachs 1860

Question 2

The technique of growing plant in nutrient solution instead of soil is known as

Answer 2

Hydroponics

Question 3

Number of essential elements

Answer 3

17

Question 4

Elements on the basis of the quantity

Answer 4

Macronutrients and micronutrients

Question 5

Examples of macronutrients

Answer 5

Carbon , hydrogen, oxygen, nitrogen, phosphorus, sulphur, potassium, calcium and magnesium

Question 6

E.g. of micronutrients

Answer 6

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

Question 7

E.g. for beneficial elements

Answer 7

Sodium,
Silicon,
Cobalt,
Selenium

Question 8

Elements components of bio molecule and stir elements of cells

Answer 8

C, H, O, N

Question 9

Elements as energy related chemical compounds

Answer 9

Mg in chlorophyll and P in ATP

Question 10

Elements which alter osmotic pressure

Answer 10

K plays an imp role in opening and closing of stomata

Question 11

Mg acts as an activator of

Answer 11

Ribulose biphosphate carbolase -oxygenase

Phosphanol pyruvate carboxylase

Question 12

The concentration of the essential element below which plant growth is retarded

Answer 12

Critical concentration

Question 13

Moderate decrease in nutrients causes

Answer 13

Deficiency

Question 14

Moderate increase in nutrients causes

Answer 14

Toxicity

Question 15

Loss of chlorophyll

Answer 15

Chlorosis

Question 16

Death of tissues

Answer 16

Necrosis

Question 17

Chlorosis can lead to

Answer 17

Yellowing of leaves

Question 18

E.g. of toxicity

Answer 18

Manganese toxicity

Question 19

The movement of ions in a cell

Answer 19

Flux

Question 20

Inward movement of ions into the cell

Answer 20

Influx

Question 21

The entry of ions to and from the symplast

Answer 21

Require energy ,

Active process

Question 22

Decomposition of organic nitrogen of dead plants and animals is known as

Answer 22

Ammonification

Question 23

Ammonia is oxidised to nitrite by

Answer 23

Nitrosomonas and Nitococcus

Question 24

Nitrite is further oxidised to nitrate with the help of which bacteria

Answer 24

Nitrobacter

Question 25

Type of nutrition of nitrogen fixing bacteria

Answer 25

Chemoautotrops

Question 26

The process by which nitrate present in the soil to nitrogen gas

Answer 26

Denitrification

Question 27

Denitrification is carried by which bacteria

Answer 27

Pseudomonas and Thiobacillus

Question 28

Free living nitrogen fixing bacteria but as symbionts

Answer 28

Frankia and Rhizobium

Question 29

Free living aerobic microbes are

Answer 29

Azotobacter and Beijernickia

Question 30

Free living/colonial anaerobic bacteria

Answer 30

Free living - Bacillus

Colonial- Rhodospirillum

Question 31

Rhizobium is seen in roots of

Answer 31

Leguminous plants

Such as alfalfa , sweet clover, sweet pea, lentils, garden pea etc .

Question 32

Frankia is seen in roots of

Answer 32

Non leguminous plants

Such as Alnus

Question 33

Nitrogen ash gets activated in the

Answer 33

Absence of oxygen