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!
Energy Flow in the Ecosystem
The principal source of energy for any ecosystem is sunlight. All food materials that we or other animals consume are manufactured directly or indirectly by plants. Think of your breakfast, bread is made of a cereal that is produced from plant material, egg from hen which has fed on plant products; and milk from cow which has consumed grass or fodder derived from plants. In a nutshell, the energy that we obtain from plants either by burning wood or by eating them, represents the solar energy trapped by the plants. We are dependent on the stored resources of solar energy. When we eat meat, we obtain energy that had been stored by plants several years before and then taken up by an animal like a goat through grazing. When we cut firewood for fuel, we obtain energy accumulated and stored by trees for perhaps a century or more. When we bum coal or petroleum, we obtain solar energy stored by plant life, millions of years ago. Now let us trace the energy flow through an ecosystem. This is represented diagramatically in Fig.
Notice that the energy from the producer to the last level has decreased considerably. The energy passed on to the next trophic level is represented by letter E of three different sizes, each by its size indicates the comparative amount of energy. The arrows in the upper half of the diagram indicate the loss of energy in the form of heat given out by different organisms. The arrows in the lower half show the energy loss via the wastes secreted and energy trapped in dead bodies of the organisms. Decomposers use these wastes and dead bodies as sources of food and derive energy from them. They also give out some unused heat energy. Energy flowing through an ecosystem is thus first captured by the producers. From the producers the energy passes to various consumers, via food. At the end of the chain we find that very little energy is left for the last trophic level, because some energy is always lost in going from one level to the next. This loss of energy limits the number of trophic levelsin the ecosystem, and so they are seldom more than five. This also clearly shows that why the steps in a food chain are limited to four or five.
Determine the structural units of silicate clays The tetrahedral and octahedral sheets are the fundamental structural units of silicate clays. They bound together within the cr
Observing sun spots Use the telescope that you made in a last experiment. Set it up so that it points directly at the sun and focus it so that a clear and bright image of the s
Question 1 Database design plays important role in success of CDM. Justify Question 2 What is Clinical data coding? Why coding is required in CDM? Question 3 List
Aspirations: We often have to make decisions and choices about hdw to spend our time, money and energy. Sometimes the choices are simple like whether to wear a blue dress or
Define Co-transport - Secondary Active Transport Determine If the two substances whose transport is coupled, move in similar direction, the phenomenon is known as co-transport
Composition of Bile - Liver and Bile Stored in the Gall Bladder There is a slight difference between the composition of bile produced by the liver and bile stored in the gall b
Explain the Radioactive Proteins If a sample of plasma is allowed to incubate with the radioactive iodine ( 131 I) for 30 minutes or more, some of the protein combines with iod
Consider the following data for ethylene hydrogenation to ethane in a batch reactor: C 2 H 4 + H 2 → C 2 H 6 The reaction may be considered to be first-or
TO SHOW THAT AIR HAS WEIGHT Drive a thin nail by the exact centre of a long rod such as a metre stick or a yard stick. Balance the stick by resting the nail on the rims of two
Explain the Simple Cells - Primary Visual Cortex They are most sensitive to lines oriented in a particular angle to the vertical. Simple cells probably receive a convergence of
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd