Mineral Nutrition - Online Test
Q1. Amino acid derivatives in which –OH component of carboxylic group is replaced by another amino group are called
Answer : Option C
Explaination / Solution:
Amides are obtained from the replacement of –OH component of carboxylic group of amino acid by another amino group.
Q2. Mineral absorption into the plant is always against the concentration gradient and use ATP as source of energy, it is an/ a
Answer : Option D
Explaination / Solution:
Mineral absorption into the plant is always against the concentration gradient and use ATP molecules as source of energy is an active process. As concentration of minerals are always higher in cell than soil.
Q3. Which one is prerequisite for nitrogen fixation?
Answer : Option B
Explaination / Solution:
During nitrogen fixation atmospheric nitrogen is converted into nitrates and nitrites. When deficiency of nitrate occurs in soil, nitrogen fixation occurs. So, nitrate deficiency is prerequisite for nitrogen fixation.
Q4. Analysis of xylem sap shows
Answer : Option A
Explaination / Solution:
Mineral salts are translocated through xylem along with the ascending stream of water, which is pulled up through the plant by transpirational pull.
Q5. Function of laghaemoglobin during biological nitrogen fixation in root nodules of legumes is to
Answer : Option A
Explaination / Solution:
During biological nitrogen fixation in root nodules of legumes, laghaemoglobin provide protection to the nitrogenase from Oxygen.
Q6. Which group of three elements is required for both photosynthesis mitochondrial electrons transport?
Answer : Option B
Explaination / Solution:
Three elements, Cu, Mn and Fe is required for both photosynthesis as well as mitochondrial electron transport for ATP formation.
Q7. Salt nutrition is
Answer : Option B
Explaination / Solution:
Salt nutrition is process of increase in respiration rate during mineral absorption by roots from soil.
Q8. Identify the part of nodule marked X
Answer : Option B
Explaination / Solution:
The figure shown above is the nodule formation in leguminous roots. The part marked as ‘x’ shown is figure is infection thread through which Rhizobium enters the root.
Q9. They are compound or mixture of chemicals which are added to the soil in order to overcome deficiency of minerals
Answer : Option C
Explaination / Solution:
Fertilizers are compound or mixture of chemicals which are added to the soil in order to overcome deficiency of minerals. Fertilizers are added to restore the nutrient deficiency.
Q10. The autotrophs that do not use solar energy for synthesis of food are called
Answer : Option A
Explaination / Solution:
The autotrophs are those organism that prepare their own food by using solar or chemical energy. The autotrophs that do not use solar energy for synthesis of food are called chemoautotrophs.
