Blackman's Law of Limiting Factor
Trending Questions
Q.
How water affects the rate of photosynthesis?
Q.
Name the factors that affect photosynthesis.
Q.
Which one of the following is not an attribute of enzymes?
They are specific
They are not used in chemical reactions
They are thermolabile
They are proteinaceous
Q. “Law of limiting factors” was given by ____________.
- Priestley
- Hill
- Blackman
- Liebig
Q. The external factor that is rarely a limiting factor and the factor that is a major limiting for photosynthesis, respectively, are
Light and CO2
Temperature and light
CO2 and temperature
CO2 and H2O
Q. Explain the factors affecting the rate of photosynthesis.
Q.
Why can enzymes be used over and over again?
Q.
The stimuli that comes from within organisms own body is called
external stimuli
internal stimuli
hormonal stimuli
chemical stimuli
Q. According to the Blackman's law of limiting factors, when a process is made of discrete steps, its rate is limited by the step.
- fastest
- slowest
- first
- last
Q. Assertion :The external factors that affect photosynthesis are number , size, age and orientation of leaves, mesophyll cells and chloroplasts and the amount of chlorophyll. Reason: The internal factors that affect photosynthesis are availability of sunlight, temperature , CO2 concentration and water
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
- Assertion is correct but Reason is incorrect
- Both Assertion and Reason are incorrect
Q. The intensity of light beyond a particular limit is unable to increase the rate of photosynthesis. The phenomena is known as
- Light saturation intensity.
- Light compensation point.
- Solarization.
- None of the above.
Q. What do you mean by limiting factors? Explain effect of light on photosynthesis. Which hormone is named as hormone of flight and flight?
Q. Fill in the blanks with the appropriate answer from the choices given in the brackets.
The dark reaction of photosynthesis is known as ............... (Hill reaction, cyclic phosphorylation, Calvin cycle).
The dark reaction of photosynthesis is known as ............... (Hill reaction, cyclic phosphorylation, Calvin cycle).
Q. Discuss the effect of various environmental and plant factors on the process of photosynthesis.
Q. What would happen to the rate of photosynthesis inC3 plants if the CO2 concentration level almost doubles from its present level in the atmosphere
Q.
Define the following:
Enzymes.
Q. A plant is exposed to an optimum amount of light intensity, with a limited supply of CO2. As the carbon dioxide, concentration increases the rate of photosynthesis increases. Which of the following act as limiting factor in above-given case?
- Carbon dioxide
- Light
- Temperature
- Both A and B
Q. A plant is exposed to an optimum amount of light intensity, with a limited supply of CO2. As the carbon dioxide concentration increases
- The rate of photosynthesis increases
- The rate of photosynthesis decreases
- None of the above
- The rate of photosynthesis remains constant
Q. The external factor that is rarely a limiting factor and the factor that is a major limiting for photosynthesis, respectively, are
- CO2 and temperature
- Light and CO2
- CO2 and H2O
- Temperature and light
Q. State the law of limiting factor.
Q. Which one of the following would not be limiting factor in photosynthesis?
- CO2
- O2
- Light
- Chlorophyll
Q. “Law of limiting factors” was given by ____________.
- Priestley
- Hill
- Blackman
- Liebig
Q. Write notes on
(a) Compensation point
(a) Compensation point
(b) The blackman's principle of limiting factors
(c) Rubisco
(d) Photorespiration and aerobic respiration
(e) Light reaction and dark reaction
(f) C3 and C4 plants
Q. The increase in the ........... factor greatly ........... the rate of photosynthesis.
- Slowest, increases
- Slowest, decreases
- fastest, increases
- None of the above
Q. Which one of the following is limiting rate of photosynthesis in nature
- Light
- CO2
- Chlorophyll
- O2
Q. Law of limiting factor was proposed by
- Robot Hill
- Kolvin
- Blackmann
- Arnon
Q. A plant is exposed to an optimum amount of carbon dioxide, with a limited light intensity. As the intensity of light increases, the rate of photosynthesis increases. Which of the following act as limiting factor in above-given case?
- Light
- Carbon dioxide
- All of the above
- Temperature
Q. The given diagram illustrates Blackman's law of limiting factor. Which of the factor can be considered as a limiting factor in the above diagram?
- Carbon dioxide
- Temperature
- Intensity of light
- All of the above
Q. The Blackman's law of limiting factor is an elaboration of
- Liebig's law of minimum.
- Hatch and Slack mechanism.
- Sach's cardinal points.
- None of the above.
Q. In an experiment on O2 evolution by photosynthesising Hydrilla plant, a pinch of sodium bicarbonate is added to water. The rate of photosynthesis or O2 evolution will
- Stop
- Decrease
- Increase
- Not be affected