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

Cnidaria and protozoan, What are the advancement of cnidaria over protozoa

What are the advancement of cnidaria over protozoa

Find out risk factors for coronary disease, Q. Find out risk factors for co...

Q. Find out risk factors for coronary disease? 1) Tobacco Smoking, the single most preventable cause of death is a leading risk factor for CAD, cerebrovascular accident and

Explain the classification of carbohydrates, Define Classification of Carbo...

Define Classification of Carbohydrates? Carbohydrates are defined as polyhydroxy aldehydes or ketones or substances that produce such compounds when hydrolyzed. Carbohydrates a

Developing a strategy for improvement in the rural economy, Define Developi...

Define Developing a strategy for improvement in the rural economy? It is necessary to develop a strategy that results in improvement in the rural economy. This could be achieve

Incomplete digestive and a complete digestive system system, Q What is the ...

Q What is the difference between an incomplete digestive and a complete digestive system system? How are these types of digestive tubes associated or not to extracellular digestion

Explain the clinical manifestations for obesity, Explain the Clinical manif...

Explain the Clinical manifestations for Obesity? You must have observed that your overweight friends and colleagues seem to have less energy which makes them an easy prey for f

What are genetic mutations, What are genetic mutations? The Genetic mut...

What are genetic mutations? The Genetic mutations are alterations of the genetic material (compared to the normal condition of the species) involving modifications in the norma

What would the priorities be for allocating, Agriculture, industry, and gro...

Agriculture, industry, and growing populations of cities all compete, through political influence, for water. If you were in charge of water resources in an arid region, what would

How can the endoskeleton of echinoderm, Q How can the endoskeleton of echin...

Q How can the endoskeleton of echinoderms be characterized in comparison to analogous structures present in vertebrates, arthropods and molluscs? The echinoderm skeleton is int

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