Question

three of the same species of plant are each grown undera different colored light for the same amount of a is grown under blue light, plant b is grownunder green light, and plant c is grown under orangelight. assuming the plants use only chlorophyll a andchlorophyll b for photosynthesis, what would be thepredicted order of the plants from most growth to leastgrowth?common than positive feedback mechanisms in livingcells?

Answer 1

Plant A, grown under blue light, will grow the most, followed by Plant C under orange light, with Plant B under green light growing the least, due to the specific light absorption properties of chlorophyll a and b.

Step-by-step explanation:

When predicting the growth order of plants A, B, and C, grown under blue, green, and orange light respectively, we need to consider which wavelengths of light chlorophyll a and chlorophyll b absorb most effectively for photosynthesis. Chlorophyll a absorbs light primarily at the blue (around 430 nm) and red (around 662 nm) wavelengths, while chlorophyll b absorbs light at blue (around 453 nm) and red (around 642 nm) wavelengths. Green light, on the other hand, is reflected more than it is absorbed, making it the least effective for photosynthesis.

Given this information, we can predict that Plant A, which is under blue light, would show the most growth because both chlorophyll a and b absorb blue light well. Plant C, under orange light, would grow more than Plant B since orange light is closer to red, which is also absorbed well by chlorophylls. Meanwhile, Plant B, under green light, is expected to grow the least because green light is not strongly absorbed by chlorophylls.

Therefore, the predicted order from most growth to least growth would be: Plant A (blue light), Plant C (orange light), Plant B (green light).