Mineral Nutrition Mock Exam-3

Question No:1

Element involved in splitting of water is

[A] Mn
[B] Ca
[C] Cl
[D] all

Question No:2

Mn induced deficiency of

[A] Fe
[B] Mg
[C] Ca
[D] all

Question No:3

Which one of the following statement is incorrect?

[A] The first phase of mineral absorption is the rapid uptake of ions into free or outer space
[B] In the second phase of uptake, ions are slowly taken into inner space the Symplast of the cells
[C] Movement of ion is usually called flux
[D] Inward movement of ion out flux and out word movement of ion is called influx

Question No:4

Ascent of mineral is mainly due to

[A] xylem
[B] phloem
[C] pericycle
[D] cortex

Question No:5

Mineral available to plant is mainly obtained from

[A] decay of other plants
[B] decay of other animals
[C] weathering of rocks
[D] none

Question No:6

Function of soil is to

[A] supply mineral to plant
[B] harbour nitrogen fixing bacteria
[C] hold water and supply air to root
[D] all

Question No:7

Fertilizer contains

[A] micronutrient
[B] macronutrient
[C] both
[D] none

Question No:8

Nitrogen is limiting mineral for

[A] natural ecosystem
[B] agro ecosystem
[C] both
[D] none

Question No:9

Conversion N2 to ammonia is known as

[A] nitrogen fixation
[B] nitrification
[C] denitrification
[D] ammonification

Question No:10

Lightening and UV radiation can cause a reaction between nitrogen and oxygen and produces

[A] NO
[B] NO2
[C] N2O
[D] All

Question No:11

Decomposition of organic nitrogen of dead plants and animals into ammonia is called

[A] Nitrogen fixation
[B] Nitrification
[C] Denitrification
[D] Ammonification

Question No:12

What happens to ammonia formed by ammonification?

[A] Some gets volatilized
[B] Most of it gets converted into nitrate by soil bacteria
[C] Some will undergo biological nitrogen fixation
[D] Both (a) and (b)

Question No:13

2NH3 + 3O2->2NO2 + 2H+ +2H2O.
Reaction can be caused by
(1) nitrosomonas.
(2) nitrococcus.
(3) nitrobacter
(4) pseudomonas.
(5) thiobacillus.

[A] 1 and 5 only
[B] 1 and 2 only
[C] 4 and 5 only
[D] Only 3

Question No:14

2NO2 +O2->2NO3
This step of process nitrification is done by _ _________ bacteria.

[A] pseudomonas
[B] thiobacillus
[C] Nitrobacter
[D] nitrococcus

Question No:15

Nitrifying bacteria are

[A] photoautotroph
[B] chemoautotroph
[C] heterotrophy
[D] all