MCQGeeks
0 : 0 : 1
CBSE
JEE
NTSE
NEET
English
UK Quiz
Quiz
Driving Test
Practice
Games
CBSE
Class 11 Biology
Mineral Nutrition
Quiz 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
In plants, a common symptom caused by deficiency of P, K, Ca and Mg is the
0%
bending of leaf tip
0%
formation of anthocyanins
0%
poor development of vasculature
0%
appearance of dead necrotic tissue
Explanation
appearance of dead necrotic tissue
Function of zinc is
0%
Closing of stomata
0%
Biosynthesis of 3-IAA
0%
Synthesis of chlorophyll
0%
Oxidation of carbohydrate
Explanation
Synthesis of chlorophyll
Which of the following is a group of micronutrients?
0%
Ca, Zn, B
0%
Fe, Mn, Cu
0%
Cl, C, Ca
0%
Ni, Mo, H
Explanation
Fe, Mn, Cu
The process of conversion of NO
0%
nitrification
0%
ammonification
0%
denitrification
0%
nitrogen fixation
Explanation
denitrification
The formation of first stable product of nitrogen fixation is catalysed by enzyme
0%
dehydrogenase
0%
nitrogenase
0%
isomerase
0%
none of these
Explanation
nitrogenase
Manganese toxicity leads to deficiency of
0%
iron
0%
calcium
0%
magnesium
0%
all of the above
Explanation
all of the above
Chlorosis will occur if a plant is grown in
0%
dark
0%
shade
0%
strong light
0%
Fe – free medium
Explanation
Fe – free medium
Choose the correct function of magnesium.
0%
It is a constituent of several coenzyme.
0%
It activates the enzymes of respiration and photosynthesis.
0%
It activates enzyme catalase.
0%
It helps in maintaining anion-cation balance.
Explanation
It activates the enzymes of respiration and photosynthesis. Explanation:
Mineral salts which are absorbed by the roots from soil are in the form of
0%
Dilute solution
0%
Very concentrated solution
0%
Concentrated solution
0%
Very dilute solution
Explanation
Very dilute solution
Which one of the following mineral elements plays an in biological nitrogen fixation?
0%
Copper
0%
Manganese
0%
Zinc
0%
Molybdenum
Explanation
Molybdenum
Oxygen scavangers present in root nodules of legumes is
0%
haemoglobin
0%
leg haemoglobin
0%
cyano haemoglobin
0%
none of these
Explanation
leg haemoglobin
Which one of the following is not a micronutrient?
0%
Magnesium
0%
Molybdenum
0%
Boron
0%
Zinc
Explanation
Magnesium
Which of the following is not a macronutrient
0%
iron
0%
calcium
0%
manganese
0%
phosphorus
Explanation
manganese
Insectivorous plants grow where
0%
There is carbohydrate deficient soil
0%
There is nitrogen deficient soil
0%
Vitamin c is required
0%
Hormones are required
Explanation
There is nitrogen deficient soil
Phytotron is meant for
0%
Controlled humidity
0%
Induction of mutations
0%
Controlled irradiation
0%
Growing plants under controlled environment
Explanation
Growing plants under controlled environment
Toxicity of which element leads to the appearance of brown spots on leaves
0%
Mg
0%
Mn
0%
Fe
0%
Cu
Explanation
Mn
Presence of phosphorus
0%
brings about healthy root growth
0%
promotes fruit ripening
0%
retards protein formation
0%
none
Explanation
retards protein formation
Which element is required for opening and closing of stomata?
0%
P
0%
K
0%
Ca
0%
Na
Explanation
K
Exanthema is due to deficiency of
0%
B
0%
Mo
0%
Mn
0%
Cu
Explanation
Cu
NPK denotes
0%
Nitrogen, Protein, Kinetin
0%
Nitrogen, Protein, Potassium
0%
Nitrogen, Potassium, kinetin
0%
Nitrogen, Phosphorus, Potassium
Explanation
Nitrogen, Phosphorus, Potassium
0 h : 0 m : 1 s
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
0
Answered
0
Not Answered
0
Not Visited
Correct : 0
Incorrect : 0
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Support mcqgeeks.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page