1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
BARSIC [14]
3 years ago
12

Consider a plant that grows best in bright sunlight in which seed germination is controlled by phytochromes. Which of the follow

ing statements describe(s) the structure and function of phytochromes in this plant? a. When a phytochrome in the Pfr configuration absorbs far-red light, the phytochrome reverts to the Pr configuration. b. Far-red light stimulates the plant seeds to germinate when the phytochrome is in the Pfr configuration. c. The plant seeds are more likely to germinate after exposure to red light than after exposure to far-red light. d. The effects of red and far-red light on phytochromes are irreversible. e. Phytochromes absorb red light and far-red light equally when the phytochrome is in the Pfr configuration. f. Phytochromes absorb red light maximally when the phytochrome is in the Pr configuration. g. Phytochromes contain photoreceptors.
Biology
1 answer:
ddd [48]3 years ago
3 0

Answer:

The answer is c) The plant seeds are more likely to germinate after exposure to red light than after exposure to far-red light

Explanation:

Phytochromes are involved in the biological cycle of the plant, from germination to flowering and tubing. The red light (660 nm) activates the phytochrome, while the ultra-red or far red light (730 nm) inactivates it. In both positive photoblastic seeds (response of the seeds to light) and in the negative photoblastic seeds the red light stimulates germination, while the distant red light inhibits it.

You might be interested in
Why don't lipids dissolve in water? I know that they don't but I need to know why. I've tried looking it up but I can't find it
astra-53 [7]
Lipids don't dissolve in water because of the different polarities. Water is polar and lipids are not polar which is why they don't dissolve. What this means is that they don't bond and don't share electrons and therefore don't mix.
7 0
3 years ago
When fertilizer runs off into streams and lakes, what increases in the water? Select all that apply.
Goshia [24]
D the amount of Toxic Chemicals
7 0
3 years ago
In tropical climates, why is there heavy vegetation but poor soil?
Georgia [21]
Answer - B

Reason - Since the area is in the tropics there will be time to time heavy precipitation, which over time the decomposed nutrients will get washed down into a run off and depleted.
5 0
3 years ago
The molecules that make up living things are incredibly diverse due in part to the variety of possible carbon skeletons. Which o
Rom4ik [11]

I. triple bonds, III. rings and IV. branches

7 0
3 years ago
Read 2 more answers
How does a stormwater runoff system store water?
Dmitry_Shevchenko [17]

Answer:Stormwater runoff is the result of snow melt or may be due to fall of rain flowing on the land surface. ... Stormwater that cannot be directed back into rivers or streams is stored in Retention basin. Retention basins allows water to seep through the soil and then into shallow groundwater aquifer. got offline

Explanation:

8 0
3 years ago
Other questions:
  • If we know that apatite is the mineral that makes up the enamel of our teeth, what physical properties might you want to know ab
    8·1 answer
  • A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern? A. Phloem
    9·2 answers
  • Why did early scientists believe that plants were fundamentally different than animals?
    11·1 answer
  • Half the distance between a wave's crest and trough . A. amplitude B. crest C. electromagnetic radiation D. frequency E. longitu
    9·2 answers
  • The production of ________ , a protein that binds calcium in the intestinal cells, slows as a result of a vitamin d deficiency.
    5·1 answer
  • What is the most specific taxonomic classification of a cat?
    7·2 answers
  • As the hypothesis of sea-floor spreading predicts, the age of the ocean floor differs with location. What pattern does the ocean
    15·1 answer
  • There are three essential components of all homeostatic control mechanisms; control center, receptor, and effector. The __(1)___
    8·1 answer
  • 1. In this environment, which trait is adaptive for the birds?
    5·1 answer
  • Paramecium are single cell eukaryotes that live in fresh (pure) water. They have a vacuole that contracts to expel excess water
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!