4.2 factors effecting photosynthesis Flashcards
(10 cards)
Why may plants produce insufficient chlorophyll?
2 answers
They have a disease like Tobacco Mosaic Virus
They lack the required nutrients
What are the factors affecting photosynthesis:
Light intensity
carbon dioxide levels
temperature
water availability.
Why is photosynthesis so important?
Produces oxygen for animals
Produces food for plants and other organisms.
More light means _______ energy for photosynthesis,
more or less, explain why?
More light
means more energy for photosynthesis, so the rate increases.
If light is too low, photosynthesis ________
slows down or goes fastens, explain why
Slows down
This is because less energy is produced for photosynthesis
The less than average amount of water can ______ photosynthesis because…?
limit or increase, explain why
Lack of water can limit photosynthesis and cause the plant to wilt.
Yes or no
can too much water availability harm photosynthesis?
justify your answer
Yes, too much water can harm photosynthesis
because it can cause the plant’s roots to become waterlogged
this reduces oxygen supply to the roots and damaging them
Too low temperatures slow photosynthesis because..?
enzymes work less efficiently
chemical reactions happen more slowly
Too high temperatures slow photosynthesis because..?
it can damage or denature the enzymes stopping the process altogether.
Carbon dioxide concentration affects photosynthesis because…
it’s one of the key raw materials plants use to make glucose
