Save
...
Biology
B4 - bioenergects
Photosynthesis and limiting factor
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
Poppy
Visit profile
Cards (28)
What process do plants need to survive?
Photosynthesis
View source
What are the four main factors affecting photosynthesis?
Light intensity
, temperature,
CO2
concentration,
chlorophyll
View source
What role does chlorophyll play in photosynthesis?
It absorbs
light energy
needed for photosynthesis
View source
How does a lack of chlorophyll affect photosynthesis?
It reduces the
rate of photosynthesis
View source
What can cause variations in chlorophyll levels in plants?
Disease, environmental stress, lack of
nutrients
View source
What are limiting factors for photosynthesis?
Light
,
carbon dioxide
, and temperature
View source
On which axis is light intensity plotted in photosynthesis graphs?
X-axis
View source
What happens to the rate of photosynthesis as light intensity increases?
It increases until it
plateaus
View source
What does it mean when the graph of photosynthesis plateaus?
Another factor is
limiting
photosynthesis
View source
How does carbon dioxide concentration affect photosynthesis?
More CO2 increases the rate until it plateaus
View source
How does temperature initially affect the rate of photosynthesis?
It increases the rate due to faster
enzyme
activity
View source
What happens to enzymes at high temperatures during photosynthesis?
They begin to
denature
and lose function
View source
At what temperature do enzymes involved in photosynthesis fully denature?
About
45°C
View source
What does a graph with two curves indicate in photosynthesis experiments?
Different
limiting factors
in each experiment
View source
How can farmers create optimal conditions for photosynthesis?
By using
greenhouses
, artificial light, and
CO2
View source
What is one benefit of using greenhouses for crops?
They trap
heat
and protect from pests
View source
Why might farmers use fertilizers in greenhouses?
To ensure plants have
essential minerals
View source
What must farmers consider when increasing production costs for crops?
The cost versus the
expected yield
increase
View source
Where can students find additional resources related to these topics?
On the website
cognito.org
View source
What types of resources are available on cognito.org?
Videos, questions, flashcards, and
progress tracking
View source
What is the role of chloroplasts in photosynthesis?
They contain
chlorophyll
for light absorption
View source
Why is light energy important in photosynthesis?
It powers the process of converting
CO2
and water
View source
How does environmental stress affect chlorophyll production?
It can reduce chlorophyll levels in
plants
View source
What is the relationship between temperature and enzyme activity in photosynthesis?
Higher
temperatures
increase
activity until
denaturation
View source
What does the plateau in photosynthesis graphs indicate?
Another factor is
limiting
the rate
View source
How do paraffin heaters benefit greenhouse conditions?
They release heat and
carbon dioxide
View source
How do pests and pathogens affect crop yield?
They can reduce the overall yield of
crops
View source
What economic considerations do farmers face in crop production?
Balancing
costs
against
expected
yield
increases
View source