1. Bell Jar experiment was performed by
a) Jan Ingenhousz
b) Joseph Priestley
c) Von Sachs
d) Cornelius Van Niel
Explanation: Bell Jar experiment was performed by Joseph Priestley.
2.
Which of the following does Priestly conclude on the basis of above experiment?
a) Burning candle or animal that breathes air, somehow, damages the air.
b) Plants restore to the air, whatever breathing animal and burning candles remove.
c) Both (a) and (b)
d) Light is essential for it.
Explanation: Both (a) and (b)
3. Find the method used to light the candle in bell jar experiment without disturbing the setup.
a) Removing bell jar slowly and light the candle
b) Creating a hole in bell jar
c) Using hand lens
d) Through a sudden replacement by another enlightened candle
Explanation: Using hand lens
4. Who proved that light is essential for plant process that purifies foul air by placing priestly and
setup once in light and once in dark?
a) Jan Ingenhousz
b) Joseph Priestley
c) Von Sachs
d) Cornelius Van Niel
Explanation: Jan Ingenhousz
5. _______ performed an elegant experiment with an _______ plant to show that in bright sunlight,
small bubble, were formed around the _______ parts, while in dark they do not die.
a) Ingenhousz, Aquatic, Green
b) Ingenhousz, Terrestrial, Green
c) Priestly, Aquatic, Green
d) Priestly, Aquatic, Non-green
Explanation: Ingenhousz, Aquatic, Green
6. Which of the following proved that green part could release O2 by his experiment on an
acquatic plant?
a) Jan Ingenhousz
b) Joseph Priestley
c) Von Sachs
d) Cornelius Van Niel
Explanation: Jan Ingenhousz
7. The stored form of glucose in plant is
a) Inulin
b) Sucrose
c) Starch
d) Glycogen
Explanation: Starch
8. Who provided the evidence for the production of glucose when plants grow?
a) Jan Ingenhousz
b) Joseph Priestley
c) Von Sachs
d) Cornelius Van Niel
Explanation: Von Sachs
9. Von Sachs studies shows that
a) Green substance in plants is located in special bodies within the plant cell.
b) Glucose is made in green part of plant.
c) Glucose is usually stored as starch.
d) All the above
Explanation: All the above
10. The first action spectrum of photosynthesis is described often as an experiment of
a) Jan Ingenhousz
b) Joseph Priestley
c) Von Sachs
d) Engelmann
Explanation: Engelmann