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Liula [17]
1 year ago
6

Help please thank you

Biology
1 answer:
tangare [24]1 year ago
8 0
A concept that ypu try to proveYour welcome is the correct spelling
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The leaves at the top of a tree’s canopy are exposed to direct sunlight during the day, and their phytochromes will occur in a h
olya-2409 [2.1K]

Answer:

Explanation:

1)Pfr/Pr

2) Pr

3)far-red

Explanation:

The leaves at the top of a tree’s canopy are exposed to direct sunlight during the day, and their phytochromes will occur in a high *Pfr/Pr* ratio. Meanwhile, the leaves of the same tree at the bottom of the canopy are highly shaded during the day and will likely have a higher proportion of the * ( PHYTOCHROME )Pr *;form of phytochrome present due to exposure to a higher proportion of *FAR RED * light.

Plants make use of the phytochrome system to it's adjust growth based on the seasons. Through phytochrome plants is able to respond to the timing and duration of dark and light periods. At dawn, all the phytochrome molecules present in the leaved are converted to the active Pfr form until sunset this is because the sun is unfiltered, and unfiltered sunlight has high percentage of red light, but lower far-red light, with the help of phytochrome system , the plants is able to compare the length of dark periods over several days.

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A homozygous tall and heterozygous purple flowered plant was crossed with a heterozygous tall and white flowered pea plant. Pred
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Sorry just need to answer lol
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3 years ago
PLEASE HELP ME!!
Minchanka [31]

Answer:

Evolution

Explanation:

Evolution is a gradual change in a population that occurs overtime in a species.

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