1. The following functions are related to
(1) Uptake and the utilization of calcium
(2) Carbohydrate translocation
(3) Cell elongation and maturation
(4) Membrane functioning
a) Ca
b) B
c) Mn
d) Zn
Explanation: B
2. The element involved in splitting of water is
a) Mn
b) Ca
c) Cl
d) All of these
Explanation: All of these
3. Mn induced the deficiency of
a) Fe
b) Mg
c) Ca
d) All of these
Explanation: All of these
4.Which one of the following statement is incorrect?
a) The first phase of mineral absorption is the rapid uptake of ions into free or outer space.
b) In the second phase of uptake, the ions are slowly taken into inner space, the symplast of
the cells.
c) The movement of ion is usually called flux.
d) The inward movement of ion outflux and outword movement of ion is called influx.
Explanation: "The inward movement of ion outflux and outword movement of ion is called influx". This statement is incorrect.
5. Ascent of mineral is mainly due to
a) Xylem
b) Phloem
c) Pericycle
d) Cortex
Explanation: Ascent of mineral is mainly due to xylem.
6. The mineral available to plants is mainly obtained from
a) Decay of other plants
b) Decay of other animals
c) Weathering of rocks
d) None of these
Explanation: The mineral available to plants is mainly obtained from weathering of rocks.
7. The function of soil is to
a) Supply mineral to plants
b) Harbour the nitrogen fixing bacteria
c) Hold water and supply air to root
d) All of these
Explanation: All of these
8. Fertilizer contains
a) Micronutrient
b) Macronutrient
c) Both (a) and (b)
d) none of these
Explanation: Fertilizer contains both micronutrient and macronutrient.
9. Nitrogen is limiting mineral for
a) Natural ecosystem
b) Agro-ecosystem
c) Both (a) and (b)
d) None of these
Explanation: Nitrogen is limiting mineral for natural ecosystem and agro-ecosystem.
10. Conversion of \[N_{2}\] to ammonia is known as
a) Nitrogen fixation
b) Nitrification
c) Denitrification
d) Ammonification
Explanation: Conversion of \[N_{2}\] to ammonia is known as Nitrogen fixation.