What is the phototropism, Biology

Assignment Help:

What is the phototropism?

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

The Phototropism relates to the auxins ever since the exposition of one side of the plant to light makes these hormones concentrate in the darker side. This fact makes auxin action upon the stem to be positive that is the growth of the darker side is more intense and the plant arcs towards the lighter side and 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.

 


Related Discussions:- What is the phototropism

Botany., the evolution of gamatophyte in pteridophyte

the evolution of gamatophyte in pteridophyte

Pathogenic bacteria, Pathogenic bacteria Heterotrophic bacteria could ...

Pathogenic bacteria Heterotrophic bacteria could be divided into saprophytes and parasites. Saprophytes normally do not cause any disease and they survive on dead or decaying

Name the hormone that makes the plants more tolerant, In humans, starch dig...

In humans, starch digestion begins in the buccal cavity but stops in the Stomach. Why? Name the two most biodiversity-rich zones of India. Name the hormone that makes the p

The rapeutic nurse, THE RAPEUTIC NURSE: Development of  therapeutic  n...

THE RAPEUTIC NURSE: Development of  therapeutic  nurse patient  relationship is the basic requirement  of nursing. A helping relationship  in nursing may be explained as an in

True cyst- endodontics principles and practice, True cyst: cyst that is co...

True cyst: cyst that is completely lined by epithelial tissues.All the lesions are far away without communication with endodontic access or endodontic cavity or periapical

Charles darwin was the first person, Charles Darwin was the first person to...

Charles Darwin was the first person to suggest that: a. the present forms of all existing species are the result of natural selection b. species have changed over long periods of t

Determine the food sources of pyridoxine, Determine the Food Sources of Pyr...

Determine the Food Sources of Pyridoxine? Raw foods contain more of this vitamin than cooked foods. The food sources include: 1. Rich sources: Rice polishing s, wheat bran,

Which term describes organisms which live in lake/ocean, Which term is used...

Which term is used to describe organisms that live on or in the bottom of an ocean or lake. Such organisms can be found anywhere from the shoreline to greatest ocean depths? a)

Why is it not correct to assert that the dna, Q. Why is it not correct to a...

Q. Why is it not correct to assert that the DNA self- replicates? The DNA is not completely self-sufficient in its duplication process because the replication does not occur wi

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