Lettuce seeds were exposed to flashes of light of two wave lengths, red (R) and far red (FR) - VCE - SSCE Biology - Question 10 - 2005 - Paper 1
Question 10
Lettuce seeds were exposed to flashes of light of two wave lengths, red (R) and far red (FR). The percentage of seeds germinating after each treatment was measured. ... show full transcript
Worked Solution & Example Answer:Lettuce seeds were exposed to flashes of light of two wave lengths, red (R) and far red (FR) - VCE - SSCE Biology - Question 10 - 2005 - Paper 1
Step 1
A. requires red far light.
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement does not hold true as the data shows that red light alone (98% germination) is sufficient for high germination rates, while the far red (FR) light introduces variability.
Step 2
B. requires both far red and red light.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The data indicates that while far red light contributes to germination, it is not a requirement, as red light alone is effective.
Step 3
C. is influenced by whether the last flash is red or far red light.
96%
101 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
This statement aligns with the data as observed differences in germination percentage suggest that the sequence and type of light exposure impact the germination process.
Step 4
D. requires equal amounts of far red and red to get maximum germination.
98%
120 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
No evidence supports that equal amounts of both light types are necessary for optimal germination, as different combinations show varying germination percentages.
