Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Element Required By Higher Plants
Table shows the list of sixteen elements that fulfil the criteria of essentiality stated above, their approximate adequate concentration and approximate number of atoms required with molybdenum (Mo) serving as the reference point. Look at the difference! The requirement of hydrogen atoms is about 60 million times the number of Mo atoms. It is because H is an essential part of thousands of chemical compounds with which the plant is made of, whereas Mo is required only in one or two enzyme mediated reactions. Scientists have added a few more elements to the list of sixteen though they have found them essential only for certain group of plants.
These are, sodium (Na), cobalt (Co), silicon (Si), nickel (Ni) and even chromium (Cr), tin (Sn) and fluorine (F). Some specific organisms may require other elements. For example, certain algae apparently also require the elements vanadium (Va), silicon (Si) or iodine (I), while some ferns utilise aluminium (Al) and some local weeds absorb and accumulate selenium (Se) in high amounts.
Table: The essential element required by higher plants
Explain Following Trems (a) State three structural features of prokaryotic cells. (b) Describe the functions in eukaryotic cells of lysosomes, ribosomes, and centrioles.
Homologous Recombination is the exchange of the sequence between two associated but different DNA (or RNA) molecules, with the result that a new "chimeric" molecule is obtained. S
What are one advantage and one disadvantage of asexual reproduction compared with sexual reproduction? The benefit of asexual reproduction is that off- spring are genetically
How do normal flora protect against infection? a. Compete for space and nutrients with pathogens b. Release antimicrobial agents to kill pathogens c. Contribute to host health by p
Define classification of carbohydrates - Oligosaccharides? Oligosaccharides are short chains of saccharide units and are condensation products of three to ten monosaccharides.
SIMPLE LIPIDS They are lipids formed of fatty acids and alcohol without any additional group. e.g. fats or true fats,wax,cutin, suberin. Simple lipids are mainly of 2 types
Oil seed meals as source of limiting amino acids Generally ruminants are not perceived to have a requirement for essential amino acids as the rumen microbes can synthesis esse
State in brief about the alexander Luria Luria adopted or developed these items over the course of many years, Christensen published them in English but without standardisatio
It is the process of separating colloidal and suspended impurities from water by passing it through a porous bed made of fine sand and other proper sized granular materials. Filtra
Q. Basis of Classification on Form-relationship principle? As pointed out earlier, this system is mainly based on Form-relationship principle. thus the various genera were. g
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd