Role of Ca, Mg and S

Q.

Which amino acid are glucogenic?

Q. Which of the following amino acid(s) contain(s) sulphur?

1. Methionine
2. Alanine
3. Cysteine
4. Glycine

Q.

What is the role of calcium in plant growth?

Q. Apical dominance in plants is caused by:

1. High concentration of auxins in the terminal bud
2. High concentration of gibberellins in the apical bud
3. High concentration of auxins in the lateral bud
4. Absence of auxins and gibberellins in apical bud

Q. Farmers in a particular region were concerned that the pre mature yellowing of leaves of a pulse crop might cause a decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

1. Frequent irrigation of the crop
2. Treatment of plants with cytokinins along with a small dose of nitrogenous fertilizer
3. Removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5 trichlorophenoxy acetic acid
4. Application of iron and magnesium to promote synthesis of chlorophyll

Q. Sulphur is an important nutrient for optimum growth and productivity in:

1. Pulse crops
2. Cereals
3. Fibre crops
4. Oilseed crops

Q. A botanist discovered a mutant plant that was unable to produce materials that form a casparian strip. This plant would be:

1. unable to transport water or solutes to the leaves.
2. unable to use its sugar from the sink.
3. able to exert greater root pressure than the normal plant.
4. unable to control the amount of water and solutes it absorbs.

Q. Are there only 20 types of amino acids? Or is it 21?

Q. During cell division, calcium is used as calcium pectate in middle lamella of cell wall in plants.

1. True

2. False

Q. Assertion: According to Oparin, coacervates are the precursors of life.
Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.

1. Both the assertion and reason are true and the reason is the correct explanation of the assertion
2. Both assertion and reason are true but reason is not the correct explanation of the assertion
3. Assertion is true but the reason is false
4. Both assertion and reason are false

Q. Which of the following element forms the core of chlorophyll molecule?

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

Q. Which of the following is an example of alkaline amino acid?

1. Lysine
2. Aspartate
3. Alanine
4. Valine

Q. Which plant is LDP?

1. Tobacco
2. Glycine max
3. Spinach
4. Mirabilis jalapa

Q.

How does phosphorus get into plants?

Q. In tissue culture medium, the source of phytohormones is

1. Micronutrients
2. Agar agar
3. Coconut milk
4. Glucose

Q. In what kind of plants do you come across ‘Kranz’ anatomy? To which conditions are those plants better adapted? How are these plants better adapted than the plants which lack this anatomy?

Q. Match the element to its function in the plant. Element Function

A. Calcium	I. Maintenance of ionic balance
B. Boron	II. Constituent of nucleic acids
C. Phosphorus	III. Calcium absorption
D. Chlorine	IV. Activates respiratory enzymes
E. Manganese	V. Synthesis of mitotic spindle

1. A-I, B-II, C-III, D-IV, E-V
2. A-V, B-IV, C-III, D-II, E-I
3. A-IV, B-I, C-V, D-III, E-II
4. A-V, B-III, C-II, D-I, E-IV

Q. Calcium is a major constituent of

1. Primary wall
2. Secondary wall
3. Tertiary wall
4. Middle lamella

Q.

The sulphur containing amino acid is:

1. Alanine

2. Cysteine

3. Threonine

4. Glutamic acid

Q. Assertion : Deficiency of sulphur causes chlorosis in plants. Reason: Sulphur is a constituent of chlorophyll, proteins and nucleic acid

1. Both assertion and reason are true and the reason is the correct explanation for the assertion
2. Both assertion and reason are true but the reason is not the correct explanation for the assertion
3. Both assertion and reason are false
4. Assertion is true but the reason is false

Q. All nonsense codons have first base

1. Cytosine
2. Adenine
3. Uracil
4. Guanine

Q. Farmers in a particular region were concerned that premature yellowing of leaves of a pulse crop might cause a decrease in the yield. Which treatment could be most beneficial to obtain maximum seed yield?

1. Removal of all yellow leaves and spraying the remaining green leaves with 2, 4, 5-trichlorophenoxy acetic acid.
2. Frequent irrigation of the crop.
3. Treatment of the plants with cytokinins along with small doses of nitrogenous fertilizer.
4. Application of iron and magnesium to promote synthesis of chlorophyll.

Q. Assertion (A): Sulphur helps in stabilizing the protein structure.
Reason (R): Sulphur bridges are formed between sulphur containing amino acids of proteins.

1. Both A & R are true and R does not explain A

2. Both A & R are true and R explains A

3. A is true and R is false

4. Both A & R are false

Q. The structure shown belongs to which amino acid?

1. Glycine
2. Lysine
3. Valine
4. Isoleucine

Q. In calcium fluoride having the Chloride structure the coordination number for calcium iron and fluoride are

Q.

Functions of cytokinin.

Q. An amino acid is a :

1. Substituted methane
2. Substituted ethane
3. Any acid having amino group
4. Derivative of indolacitic acid

Q.

Do Roots Respond To Light?

Q. is present in middle lamella of cell wall.

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

Q.

Draw the structure of the amino acid, alanine.