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

What are the results of pulmonary artery banding, What are the Results of p...

What are the Results of pulmonary artery banding ? Results of surgery for ventricular septa1 defects are excellent. Though the mortality is not 0 per cent, in a large series it

Osmoregulation in animals, Osmoregulation in Animals Osmoregulation as...

Osmoregulation in Animals Osmoregulation associates to the regulation of water and ionic content of the body of non-chordate metazoans. These might be osmoconformers / osmoreg

What is the intermediate host of schistosoma mansoni, Q. What is the interm...

Q. What is the intermediate host of Schistosoma mansoni? Where does that host live? The intermediate host of a schistosome is a gastropod mollusc, Biomphalaria genus and a snai

Define about anthropometric and physiological, Define about Anthropometric ...

Define about Anthropometric and Physiological? Various physiological and anthropometric measurements give us an indication of the present status of an individual based on which

What are sarcomeres, Q. What are sarcomeres? Sarcomeres are the contrac...

Q. What are sarcomeres? Sarcomeres are the contractile units of the muscle tissue formed of alternating myosin blocks (thick filaments) and actin blocks (thin filaments). Sever

Could she ever have a child with blood type o, a) Indicate the blood types ...

a) Indicate the blood types possible from the mating of a male who is blood type O with a female of blood type AB. b) Could a female with blood type AB ever produce a child with bl

Determine the modification of native starch, Determine the Modification of ...

Determine the Modification of native starch Modification of native starch can be either physical or chemical. Chemical modification includes reaction of starch with  acid or al

How the arrangement of cells helps with tissue functioning, PROVIDE a speci...

PROVIDE a specific example for epithelial and connective tissues, how the arrangement of cells helps with tissue functioning?

Enumerate about the luria nebraska battery, Enumerate about the Luria Nebra...

Enumerate about the Luria Nebraska battery Luria Nebraska battery will be based on the assumption that the only connecting link between Luria and that procedure is the set of

Material - separation of amino acid by paper chromatography, Determine Mate...

Determine Materials for Separation of Amino Acids by Paper Chromatography? Petridishes (200 mm diameter) with lid, Whatman Chromatographic paper, brown paper, 500 ml separating

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