WorksheetsPhotosynthesis IB quiz
Total questions: 10
Worksheet time: 18mins
Oxygen is produced during photosynthesis. What is the source of this oxygen inside the plant?
Air spaces in the leaf
Carbon dioxide
Glucose
Water
Which variable has the least effect on enzyme activity?
Temperature
Light intensity
pH
Substrate concentration
What conclusion can be drawn from examining the action spectrum for a green plant shown below?
Yellow light is the most effective at promoting photosynthesis
Every colour of light is equally effective at promoting photosynthesis
Light of wavelength 550 nm is least effective at promoting photosynthesis.
Light in the green range is the most effective at promoting photosynthesis.
What is the source of the oxygen released into the air as a product of photosynthesis?
Chlorophyll
Carbon dioxide only
Water only
Both water and carbon dioxide
The photosynthetic activity of desert plants is often reduced in the middle of the day. What is the most reasonable explanation for this fact?
Enzymes are denatured by the high temperatures.
There is not sufficient water for photosystem I.
Most of the light is reflected by the thick cuticle.
The stomata close to preserve water and gas exchange decreases
A plant is exposed to increasing light intensity from very dim to bright light, while the carbon dioxide concentration and temperature are kept at an optimum level. What will happen to the rate of oxygen production?
It will increase exponentially
It will remain constant.
It will decrease to a minimum level.
It will increase to a maximum level.
a method of separating and identifying the components of a complex mixture by differential movement through a two-phase system.
(a)
chemical decomposition of water induced by light
(a)
Outline how light energy is used and how organic molecules are made in photosynthesis.
Outline the role of chlorophyll and the effects of temperature, light intensity and carbon dioxide concentration on the rate of photosynthesis.
