Question

describe properties of phytochrome and various biological responses controlled by it.​

Answer 1

Explanation:

1. phytohormones are among the most important growth regulator
2. plant hormones (phytohormones) are signal molecules produced within plants
3. play important role in plant metabolism

Answer 2

Properties of phytochrome:

• The spectrum of the light required for the responses explains a peak in the red at about 660 nm.

• These kinds of responses can be modified by an application of far-red light (peak at 730 nm).

• when the sensitive plant tissues are exposed to red (660 nm) light-sensitive spectrophotometers can cover a contraction in absorbance at 660 nm and an increase in absorbance at 730 nm.

• Phytochrome is an important blue-green pigment present in most of the seed plants, free-sporing plants, and green algae.

• Phytochromes are chromoproteins that contain a light-absorbing group in its structure.

• It belongs to the class of photoreceptors that responds to environmental light conditions.

• There are two interconvertible forms or phytochrome available.

Various biological responses controlled by it:

• It controls various photomorphogenic responses in plants.

• Important biological responses regulated by phytochrome are seed germination, growth of the stem, pigment synthesis, expansion of leaf, chloroplast development and flowering.

Learn more about Phytochrome

What is Phytochrome theory?

https://brainly.in/question/8329440

What are phytochromes?

https://brainly.in/question/3044120