Plant Nutrient Deficiency

Q. Deficiency of which of the following nutrient leads to retarded growth and yellowing of leaves?

1. Nitrogen
2. Magnesium
3. Potassium
4. Zinc

Q.

Mention one role of copper in plants.

Q. Which of the following are the symptoms of deficiency of phosphorus?

1. Early leaf fall
2. Slow growth of roots
3. Weak stem
4. Late flowering

Q. The most abundant cation in the intracellular fluid is

1. Ca${}^{2+}$
2. H${}^{+}$
3. Na${}^{+}$
4. K${}^{+}$

Q.

Which of the following statement is not true?

1. Growth is restricted to living cells.

2. The increase in the size of a dry seed, soaked in water is the outcome of growth.

3. Growth is accomplished by metabolic processes.

4. The causative force for cell growth is turgor pressure.

Q. Which of the following is/are the symptom(s) of deficiency of potassium?

1. Retarded growth
2. Early leaf fall
3. Wilting of leaves
4. Weak stem

Q. What are the necessary condition required by the plants for their growth?

Q. Element responsible for maintaining turgor is?

1. Na
2. K
3. Ca
4. Hg

Q. Why do plants need potassium and magnesium ?

Q. The appearance of yellow edges to leaves is due to deficiency of which mineral element?

1. Calcium
2. Sodium
3. Potassium
4. Sulphur
5. Molybdenum

Q. Mottled chlorosis occurs due to deficiency of

1. Nitrogen
2. Phophorus
3. Potassium
4. Sulphur

Q. Which one is an essential mineral, not constituent of any enzyme but stimulates the activity of many enzymes?

1. Mn
2. Mg
3. K
4. Zn

Q. Which of the following is essential mineral elements and is not a constituent of any enzyme but stimulate the activity of many enzymes?

1. Zn
2. Mg
3. Mn
4. K

Q.
$K^{+}$ ions involve in stomatal regulation

1. True
2. False

Q. Plants need one of the following for ATP formation.

1. N, P
2. N, Ca
3. K
4. N, Cu

Q. The most important role of $K^{+}$ ions is that

1. It provides red colour
2. It promotes photosynthesis
3. It influences many enzymic activities which regulate many plant processes
4. It helps in the formation of cambium

Q.

What is chlorosis?

Q. Match the components of columns A, B and C.

	A	B	C
	Mineral	Deficiency symptoms	Importance
a	Potassium	(i) Leaves turn dark green	(I) Regulation of stomatal pore
b	Sulphur	(ii) Accumulation of purple pigment	(II) Constituent of Chlorophyll
c	Magnesium	(iii) Wilting and dropping of leaves	(III) Required for activity of oxidoreductase
d	Copper	(iv) Old leaves start to die	(IV) Essential for carboxylase enzyme
		(v) Shortening of inter-node	(V) It is constituent of thiamine

1. a - v - II, b - ii - V, c - iii - IV, d - vi - III
2. a - v - I, b - ii - V, c - iv - II, d - iii - III
3. a - iv - IV, b - iii - I, c - ii - V, d - v - V
4. a - iv - II, b - v - I, c - i - V, d - iii - IV

Q. Which is correctly matched?

1. Passive transport - ATP
2. Apoplast - Plasmodesmata
3. Potassium - Closing of stomata
4. Bakane of Rice seedling - F.Skoog

Q. Turgor movement is due to

1. Reversible changes in cell volume by efflux and influx of $K^{+}$
2. Irreversible change in cell volume
3. None of the above
4. Synthesis of new cell-wall

Q. Internal cork of Apple/ browning of Cauliflower is deficiency symptom of

1. $Mo$
2. $B$
3. $Cu$
4. $Zn$

Q.

Ethylene causes the closure of stomata during drought.

1. True
2. False

Q. Which of the following is major intracellular cation?

1. Potassium
2. Chloride
3. Calcium
4. Phosphate

Q. Which of the following elements is responsible for maintaining turgor in cells?

1. Calcium
2. Sodium
3. Magnesium
4. Potassium

Q.

(i) How many nutrients are essential for plants ?

(ii) What are macronutrients and micronutrients ?

(iii) List the nutrients supplied by air, water and soil.

Q. If a dried leaf is taken in a crucible and heated to 600${}^{0}C$, a grey coloured powder is left behind. It is referred to as

1. Protein content of the plant
2. Plant ash
3. Wilting percentage
4. Dry weight

Q. Deficiency of potassium in plant leads to

1. Increased monopodial growth
2. Increased apical dominance
3. Decreased apical dominance
4. Increased secondary growth

Q.

	I		II
a	Potassium	1.	Constituent of ferrefoxin
b	Sulphur	2.	Involved in stomatal movement
c	Molybdenum	3.	Needed in synthesis of auxin
d	Zinc	4.	Component of nitrogenase

1. a - 2, b - 1, c - 4, d - 3
2. a - 1, b - 2, c - 3, d - 4
3. a - 4, b - 3, c - 2, d - 1
4. a- 1, b - 3, c - 4, d - 2
5. a - 3, b - 4, c - 1, d - 2