Trophic Levels
Trophic Levels
Trophic Levels: Sometimes it is useful to study an ecosystem by grouping its organisms by their positions or levels in food chains. A level position in a food chain is called a trophic level. Energy and materials are transferred from one trophic level to another.
The producers in a food chain are at the first trophic level. The herbivores, which feed upon plants, are at the second trophic level. The carnivores, which feed upon herbivores, are at the third trophic level, and so on. So, each trophic level supports the one above it in terms of food. In a simple food chain of a grassland ecosystem, there are three trophic levels. Grass (producer) is at the first trophic level. Deer (herbivore) is at the second trophic level and lion (carnivore) is at the third trophic level.
What would happen if all the organisms of a trophic level are removed? The natural balance would be disturbed and the results would be disastrous. For example, in a grassland ecosystem, if all the carnivores (like lions) at the third trophic level are removed, the numbers of herbivores (like deer) in the trophic level below would go on increasing. Their numbers would soon be more than that can be supported by the plants of the region. They would eat up all the plants and turn the area into a desert.
In a food chain, herbivores constitute the _________________ | |||
| Right Option : C | |||
| View Explanation | |||
Organisms of the same trophic level are _______________ | |||
| Right Option : A | |||
| View Explanation | |||
In a food chain, herbivores constitute the ___________________ | |||
| Right Option : B | |||
| View Explanation | |||
Students / Parents Reviews [10]
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
Barkha Arora
10thIt was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
Cheshta
10thOne of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
Aman Kumar Shrivastava
10thI have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying
Yatharthi Sharma
10thAbhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
Manish Kumar
10thBeing a parent, I saw my daughter improvement in her studies by seeing a good result in all day to day compititive exam TMO, NSO, IEO etc and as well as studies. I have got a fruitful result from my daughter.
Prisha Gupta
8thIt was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
Eshan Arora
8thMy experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
Ayan Ghosh
8thMy experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
Hiya Gupta
8thMy experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
