1.Which is the main amino acid that is used for transamination?
a) Tyrosine
b) Proline
c) Glutamic acid
d) Alanine
Explanation: Glutamic acid
2.
What is A and B put on arrow?
a) A–Glutamate dehydrogenase, B–Transaminase
b) A–Transaminase, B–Glutamate dehydrogenase
c) A–Nitrogenase, B–Transaminase
d) A–Glumate aminase, B–Dehydrogenase
Explanation: A–Glutamate dehydrogenase, B–Transaminase
3. Select the incorrect statement from the following:
a) The amides ‒ aspargine and glutamine are found in plants as structural part of protein.
b) Amides contain less nitrogen than amino acid.
c) \[NH_{2}\] radicle is transported to other parts via xylem.
d) In soyabean, the fixed nitrogen is transported as ureides
Explanation: "Amides contain less nitrogen than amino acid". This is incorrect.
4. Ureides have
a) High N/C ratio
b) Low N/C ratio
c) Any of these
d) None of these
Explanation: Ureides have high N/C ratio.
5. Which of the following is incorrect about \[NH_4^+\] ion?
a) It is formed by the protonation of \[NH_{3}\] .
b) Less toxic so it can be accumulated in plants.
c) It is used to synthesize amino acid in plants.
d) All the above
Explanation: "Less toxic so it can be accumulated in plants". This is incorrect.
6. Select the order of true and false statements:
(a) Boron deficiency leads to stout axis.
(b) Every mineral element that is present in a cell is needed by the cell.
(c) Nitrogen as a nutrient element is highly immobile in the plants.
(d) It is very easy to establish the essentiality of micronutrients because they are required only
in trace quantities.
a) FFFT
b) FFTT
c) TTFF
d) TTTF
Explanation: FFFT
7.What is critical concentration?
a) Concentration of essential element which causes flowering in plants.
b) Concentration of essential element which is easily absorbed by plants.
c) Concentration of essential element below which the plant growth is retarded.
d) All the above
Explanation: Concentration of essential element below which the plant growth is retarded.
8. Select the order of true and false statements:
(1) Morphological changes which are indicative of certain element deficiencies are known as
deficiency symptoms.
(2) For actively mobilized element, the deficiency symptoms first appear in older tissues.
(3) When element is relatively immobile, the deficiency symptom first appear in younger
tissue.
(4) Mineral nutrition study of plant have great significance to agriculture and horticulture.
a) FFFT
b) FFTT
c) TTFF
d) TTTT
Explanation: TTTT
9.Deficiency symptom of N, K and Mg appears in
a) Young leaf
b) Meristematic tissue
c) Young stem
d) Senescent leaves
Explanation: Deficiency symptom of N, K and Mg appears in senescent leaves.
10. Which elements are relatively immobilized?
a) N and P
b) K and Mg
c) S and Ca
d) N and Mg
Explanation: S and Ca elements are relatively immobilized.