[B] Rates Of Photosynthesis Flashcards
What is the main purpose of the required practical on rates of photosynthesis?
To investigate how different factors affect the rate of photosynthesis.
Which plant is commonly used in the photosynthesis practical?
Elodea (waterweed).
True or False: Light intensity affects the rate of photosynthesis.
True.
Fill in the blank: The rate of photosynthesis can be measured by the amount of _____ produced.
Oxygen.
What are the two main variables that can be manipulated in the photosynthesis experiment?
Light intensity and carbon dioxide concentration.
What is the role of chlorophyll in photosynthesis?
Chlorophyll absorbs light energy for photosynthesis.
Multiple Choice: Which factor is NOT typically tested in a photosynthesis practical? A) Light intensity B) Temperature C) Soil pH D) Carbon dioxide concentration
C) Soil pH.
What is the equation for photosynthesis?
6CO2 + 6H2O → C6H12O6 + 6O2.
True or False: Increasing temperature will always increase the rate of photosynthesis.
False.
What is the significance of a control in the photosynthesis experiment?
To ensure that the results are due to the manipulated variable only.
What apparatus is commonly used to collect oxygen in the photosynthesis practical?
A gas syringe or an inverted graduated cylinder.
Fill in the blank: The optimum temperature for photosynthesis is around _____ degrees Celsius.
25.
What happens to the rate of photosynthesis when carbon dioxide levels are increased?
The rate of photosynthesis increases, up to a certain point.
Multiple Choice: Which of the following is a limiting factor for photosynthesis? A) Water B) Oxygen C) Chlorophyll D) Glucose
A) Water.
What is the effect of low light intensity on the rate of photosynthesis?
It decreases the rate of photosynthesis.
True or False: Photosynthesis occurs at night.
False.
What method can be used to measure the rate of photosynthesis in the practical?
Counting the number of oxygen bubbles produced.
Fill in the blank: The process of photosynthesis converts _____ energy into chemical energy.
Light.
What is one way to ensure accurate results when conducting the photosynthesis experiment?
Repeating the experiment and averaging results.
Multiple Choice: Which gas is a product of photosynthesis? A) Carbon Dioxide B) Nitrogen C) Oxygen D) Hydrogen
C) Oxygen.
What is the effect of temperature on enzyme activity related to photosynthesis?
Enzyme activity increases with temperature up to an optimum, then decreases.
What is the role of water in photosynthesis?
Water is a reactant and provides hydrogen for glucose synthesis.
True or False: The rate of photosynthesis can be affected by pollutants.
True.
Fill in the blank: The light-dependent reactions of photosynthesis occur in the _____ of the chloroplast.
Thylakoid membranes.
What is the relationship between photosynthesis and respiration?
Photosynthesis produces glucose and oxygen, which are used in respiration.
Multiple Choice: Which of the following is NOT a product of photosynthesis? A) Glucose B) Oxygen C) Carbon Dioxide D) Water
C) Carbon Dioxide.
Fill in the blank: The rate of photosynthesis can be affected by the availability of _____ and light.
Nutrients.
What is the primary pigment involved in photosynthesis?
Chlorophyll.
True or False: All plants perform photosynthesis.
False.
What is one consequence of limiting factors on plant growth?
Reduced growth and yield in crops.
What is a practical consideration when conducting the experiment outdoors?
Environmental conditions can vary and affect results.
