Home
Class 12
BIOLOGY
What will be the effect on photochrome i...

What will be the effect on photochrome in a plant subjected to continous subjected to continous red light

A

Level of phytochrome decreases

B

Phytochrome is destroyed

C

Phytochrome synthesis increases

D

Destruction and synthesis of phytochrome remain in equilibrium

Text Solution

Verified by Experts

The correct Answer is:
B
Continuous exposure to red light causes (a) conversion of `P_r-P_(fr)` which is rapidly destroyed, (b) inhibition of synthesis of` P_1` Thus, total amount of phytochrome is decreased
Promotional Banner

Similar Questions

Explore conceptually related problems

What are the effects of acid rain on plants and animals?

What is the effect of a dl-mixture on plane polarised light?

What is the effect of light radiations on reaction rates?

What happens when lead storage battery is subjected to charging?

What is the effect of red light 740 nm on the short-day plants?

What happens when acidulated water is subjected to electrolysis ?

what will happen if the blood collected from a patient is subjected to a process which removes calcium

The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards the source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R. What is the effect of substance P on the rate of growth of (a) a root and (b) a stem?

The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards the source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R. What is the name of the process (a) Q and (b) R ?

The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards the source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R. What is the chemical substance P ?