1. Deficiency symptom of plants includes
a) Chlorosis and necrosis
b) Stunted plant growth and inhibition of cell division
c) Premature fall of leaves and buds
d) All of these
Explanation: All of these
2. Chlorosis is caused due to the deficiency of
a) N, K, Mg
b) S, Fe, Mn
c) Zn and Me
d) All of these
Explanation: All of these
3. Necrosis particularly leaf tissue is caused by
a) Ca and Mg
b) Cu
c) K
d) All of these
Explanation: All of these
4. Low level of N, K, S, Mo is caused by
a) Chlorosis
b) Inhibition of cell division
c) Both (a) and (b)
d) None of these
Explanation: Low level of N, K, S, Mo is caused by chlorosis and inhibition of cell division.
5. Delay in flowering occurs due to the deficiency of
a) N
b) S
c) Mo
d) All of these
Explanation: All of these
6. The technique of growing plants without soil in nutrient solutions is called
a) Parthenogenesis
b) Hydroponics
c) Aquaculture
d) Tissue culture
Explanation: Hydroponics
7. Which of the following element is not essential for plants?
a) Iron
b) Zinc
c) Potassium
d) Iodine
Explanation: Iodine element is not essential for plants.
8. Inorganic nutrients are present in soil in the form of
a) Molecules
b) Atoms
c) Electrically charged ions
d) Parasite
Explanation: Inorganic nutrients are present in soil in the form of electrically charged ions
9.Tracer elements are
a) Microelements
b) Macroelements
c) Radioisotopes
d) Vitamins
Explanation: Tracer elements are Radioisotopes.
10.The death of stem and root tips occur due to the deficiency of
a) Phosphorus
b) Calcium
c) Nitrogen
d) Carbon
Explanation: Calcium