What is phototropism, Biology

Assignment Help:

What is phototropism?

Phototropism is the movement of plant structures in response to light. Phototropism might be positive or negative. Positive phototropism is that in which the plant movement (or growth) is towards the light source and negative phototropism is that in which the movement (or growth) is inverse, away from the light source.

Phototropism relates to auxins as the exposition of one side of the plant to light makes these hormones concentrate in the darker side. This fact makes the auxin action upon the stem to be positive, i.e., the growth of the darker side is more intense and the plant arcs towards the lighter side. In the root (when submitted to light, in general experimentally) the auxin action is negative (over the positive range), the growth of the darker side is inhibited and the root curves towards this side.

Plant Physiology - Image Diversity: phototropism

 


Related Discussions:- What is phototropism

Chamaephytes - classes of life form, Chamaephytes - Classes of Life Form ...

Chamaephytes - Classes of Life Form The perennating buds and organs are borne on shoots close to but just above the ground. The buds receive protection from fallen leaves and

Major information storage molecule, Following statement true for prokaryoti...

Following statement true for prokaryotic or eukaryotic? They use deoxyribonucleic acid as their major information storage molecule.

Infectious canine hepatitis, Infectious canine hepatitis The disease i...

Infectious canine hepatitis The disease is caused by type-1 canine Adenovirus in the family Adenoviridae. The disease appears in pups as peracute, acute, and mild. The clinica

What do you mean by bone implant interface, Q. What do you mean by Bone Imp...

Q. What do you mean by Bone Implant Interface? It consists of remodelled bony tissue. For making it strong implant should not be overloaded during its organization period i.e.

Determine the stabilized forms of natural colourants, Stabilized forms of n...

Stabilized forms of natural colourants The mimicking of the native environment in which a natural colour exists is just one way of producing a stabilized form. In this case, th

What then are antioxidants?what is their role as additive, What then are an...

What then are antioxidants?What is their role as additive Normal 0 false false false EN-US X-NONE X-NONE MicrosoftIn

#title.circulatory system, #question.what is the mechanism of circulatory s...

#question.what is the mechanism of circulatory system .

Explain glycogen storage diseases, Glycogen Storage Diseases Glycogen  ...

Glycogen Storage Diseases Glycogen  storage diseases are caused by  genetic defects that result  in  deficiencies in  certain enzymes of  glycogen metabolism. These deficiencie

Define absorption, Define Absorption, Storage and Elimination of ascorbic a...

Define Absorption, Storage and Elimination of ascorbic acid? Ascorbic acid is rapidly absorbed from the intestines primarily by active transport.  Simple diffusion or carrier-m

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd