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
R in d e rp es t It is also known as cattle plague resulting in high fever, diarrhoea and high mortality rates. In year 2006, OIE has declared that India is free from rin
Define the term - Cholera Cholera is caused by the gram negative, V. cholerae, which is acquired by ingesting food or water contaminated by faecal material from patients or
Complete Metamorphosis In all Endopterygota insects, where wings and other structures develop internally, (in invaginate imaginal epidermal pockets) such as beetles, wasps, b
Q What is the constitution of the endocrine system? The endocrine system is constituted by the hormones and the endocrine glands they secrete. Q. What is the histological n
Q. Colony collapse disorder in honey bees? Honey bees (Apis mellifera) are social insects and live in colonies in hives. Honey bees were introduced from Europe to the USA to po
What are the two main types of endocytosis? Endocytosis can be divided as pinocytosis or phagocytosis. In pinocytosis small particles on the external surface of the membrane ex
Define Use of Soy Protein Concentrates in Meat products? This area probably represents the most important application of soy protein concentrates (SPC) in the food industry. SP
Limitations of Ecological Pyramids The pyramid of energy is a significant improvement over the previous two types of ecological pyramids, yet all of them overlook one or anot
What is Eukaryotic Cells ? Eukaryotic Cells : Most cells of higher organisms, and many unicells, contain a nucleus. Organisms whose cells contain a nucleus are called euka
Q. What is Subxiphoid Short Axis Sweep? To obtain the subxiphoid short axis view transducer should be rotated by 90 degree clockwise, fi-om the previous position so that p
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