Criteria of essentiality, Biology

Assignment Help:

Criteria of Essentiality

Amon and Stout as early as 1939, suggested certain criteria that an element must fulfil in order to be classified as essential. These criteria are listed below.

  1. An element is essential if in its absence the plant cannot complete its life cycle and form viable seeds.
  2. An element is essential if it forms a part of any molecule or a constituent of the plant that in itself is essential for the plant. For example, nitrogen in protein, magnesium in chlorophyll arid iron in cytochromes.
  3. The element must act directly inside the plant, and not enhance or suppress the availability of some other element.

 


Related Discussions:- Criteria of essentiality

Which does not contain a guanidinium group, Which of the following does NOT...

Which of the following does NOT contain a guanidinium group Select one: a. Urea b. arginine c. creatine d. guanidinium ion

People who are at risk from drug-nutrient interactions, Determine People wh...

Determine People who are at risk from drug-nutrient interactions? People who are at risk from drug-nutrient interactions are the: 1. Persons who have a poor diet or in other

Define the insulin resistance - obesity, Define the Insulin resistance - Ob...

Define the Insulin resistance - Obesity? Insulin resistance is a condition in which your body cells cannot utilize insulin efficiently although sufficient amounts are secreted

Solar tracking - nastic and epinastic responses, Solar Tracking - Nastic an...

Solar Tracking - Nastic and Epinastic Responses Many plants such as sun flowers are capable of solar tracking in which the flat blade of leaves or inflorescence will remain a

What are sensory receptors, Q. What are sensory receptors? Sensory rece...

Q. What are sensory receptors? Sensory receptors are structures specialized in the acquiring of information, mechanical pressure, like temperature, pH, luminosity and chemical

Chemolithoautotrophs - nutritional types of microorganisms, Explain Chemoli...

Explain Chemolithoautotrophs - Nutritional Types of Microorganisms These microorganisms use inorganic compound as source of energy and electron and CO 2 as a source of carbon.

What is the action mechanism of the antibiotic penicillin, Penicillin, disc...

Penicillin, discovered by the Scottish doctor Alexander Fleming, in 1928, is a drug that inhibits enzymes essential for the synthesis of peptidoglycans, a constituent of the bacter

What is anti-arrhythmic pacemaker defibrillators, What is Anti-arrhythmic p...

What is Anti-arrhythmic pacemaker defibrillators ? Antiarrhythmic drugs (AADs) are classified according to whether they exert blocking actions predominantly on sodium, potassiu

Explain about osteogenesis, Explain about Osteogenesis Osteogenesis, la...

Explain about Osteogenesis Osteogenesis, large amounts of woven bone can be formed very rapidly. This bone is believed to be much more compliant than organized lamellar bone. I

Explain the compound water, Explain the compound water? Water :  Wate...

Explain the compound water? Water :  Water is the most important compound in living cells, making up most of the bulk of living organisms. Our own bodies contain 40% - 60% wa

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