Macro Nutrients_MCQ_Basic Level

Macronutrients - Basic

Dear Readers,

Macronutrients are nutrients that provide calories or energy and are required in large amounts to maintain body functions and carry out the activities of daily life. There are three broad classes of macronutrient: proteins, carbohydrates and fats.

Q1. Absence of Mg⁺⁺ ions from plants tissue results in

•  Plasmolysis
•  Hydrolysis
•  Chlorosis
•  Necrosis

Chlorosis

Q2.  Chlorosis in plants occurs due to

•  Absorption of yellowish pigment from the soil
•  High sunlight intensity
•   Deficiency of Mg and Fe in the soil
•   Low sunlight intensity

Deficiency of Mg and Fe in the soil

Q3. 3. Presence of phosphorus in a plant

•  Brings about healthy root growth
•  Promotes fruit ripening
•  Retards protein formation
•  None of the above

Brings about healthy root growth

Q4.  Woodward (1669) observed that plant grew better in muddy water than in rain water because

•  Muddy water had most of essential elements dissolved in it
•  Muddy water had micro-nutrients dissolved in it
•  Muddy water had macro-nutrients dissolved in it
•  None of these

Muddy water had macro-nutrients dissolved in it

Q5.  By the use of sulphur

•  Development of root is normal
•  Root development is reduced
•  Root development is increased
•   Root dry

Root development is increased

Q6.  In darkness the stomata close because

•  Potassium deposits in the guard cells
•  Guard cells loose potassium
•  Starch is converted into sugar
•  None of these

Guard cells loose potassium

Q7.  Fall of immature leaf is due to deficeincy of

•  Sulphur
•  Phosphorous
•  Sodium
•  Zinc

Sulphur

Q8.  Which of the following element is used up in phosphorylation

•  Calcium and sulphur
•  Chlorine and maganese
•  Iron and phosphate
•  Magnesium and phosphorous

Magnesium and phosphorous

Q9.  Phosphorus is a structural element in

•  Fat
•  Starch
•  Nucleotide
•  Carbohydrate

Nucleotide

Q10.  Plants requiring the two metallic compounds (minerals) for chlorophyll synthesis, they are –

•  Cu and Ca
•  Fe and Mg
•  Fe and Ca
•  Ca and K

Fe and Mg