Study of Mineral Nutrition: History

Q.

What affects enzyme action?

Q. When solute potential increases then water potential would: 1) increases 2) decreases 3) remain same 4) first increases then decreases

Q. Which of the following is not caused by deficiency of mineral nutrition ?

1. Necrosis
2. Etiolation
3. Chlorosis
4. Stunted growth of internode

Q. Q) CALCULATE THE OSMOTIC PRESSURE OF 0.85%(W/V) aq.SOLUTION OF NaNO3 ASSUMING THAT SOLUTE IS 90% DISSOCIATED AT ROOM TEMPERATURE.

Q. Inorganic catalysts work efficiently at _______ temperature and _______ pressure.

1. high, low
2. low, low
3. low, high
4. high, high

Q.

What is the death of the leaf tissue called?

Q. Two chambers, A and B, containing solutions are separated by a semipermeable membrane.
(b) Solution of which chamber has a lower solute potential?

Q. Two chambers, A and B, containing solutions are separated by a semipermeable membrane.

(e) At equilibrium which chamber will have lower water potential?

Q. The solute potential of a plant cell is -17 bar, and its pressure potential is 5 bar. Determine the water potential.

1. 12
2. -22
3. -12
4. 22

Q. Identify the correct option with reference to water potential.

1. ${\psi }_w={\psi }_s+{\psi }_p$
2. ${\psi }_w={\psi }_s-{\psi }_p$
3. ${\psi }_p={\psi }_s+{\psi }_w$
4. ${\psi }_s={\psi }_p+{\psi }_w$

Q. Inorganic catalysts work efficiently at _______ temperature and _______ pressure.

1. high, low
2. low, low
3. low, high
4. high, high

Q. what are the sit of production , substrate , product , optimum temperature and optimum pH of any five enzymes in human body

Q. Why Enzymes are called Bio-catalyst ?

Q. Select the correct option-
Assertion: When there is a deficiency of relatively mobile elements, the deficiency symptoms appear first in young tissues.
Reason: Relatively mobile elements like nitrogen, phosphorus etc are transported from young tissues to old senescing tissues

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

Q. The technique of hydroponics was first demonstrated by ________.

1. M. Calvin (1961)
2. Julius Von Sachs (1860)
3. Arnon (1940)
4. Hoagland (1940)

Q. Choose the correct answer from the alternatives given.
In plants a common symptom caused by deficiencies of Ca, K, Mg and P is the:

1. appearance of a dead necrotic area
2. poor development of vasculature
3. bending of the leaf tip
4. formation of carotenes in plenty

Q. Enzyme pepsin acts upon food at a pH of about

1. 3 to split proteins
2. 2 to split carbohydrate
3. 7 to change protein into peptones
4. 2 to change protein in amino acids

Q. Short / Long answer type questions .
Why is osmotic potential given a negative sign ?

Q. difference between osmotic pressure and osmotic potential

Q. Which of the following is not caused by deficiency of mineral nutrition ?

1. Necrosis
2. Etiolation
3. Chlorosis
4. Stunted growth of internode

Q.

Stratum basale and stratum spinosum collectively are knows as _________.

Q. Describe plant ash analysis.

Q. Define enzymes .

Q. Jan Ingenhousz showed that:

1. Carbon dioxide is essential for the synthesis of carbohydrates in plants
2. Only green parts of plant can synthesize glucose
3. Oxygen evolved during photosynthesis comes from water
4. Sunlight is essential to the plant process that purifies the air