Class 10 Science - Chapter Our Environment NCERT Solutions | What are trophic levels? Give an example
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
The sequential inter- linking of organisms involves the transfer of food in the form of energy from producers by the series of organisms with repeated eating and being eaten is referred to as the food chain. And, these sequential steps in the food chain are referred as different tropic levels.
Example:- Grassland ecosystem food chain and their different tropic levels
Grasses ← Insects ← Frogs ← Snake ← Predatory birds
Producers Herbivores Primary Secondary Tertiary carnivores
carnivores carnivores
Trophic levels are the nutritional levels in which food energy is transferred from one level to another level. In this above example, producers are the green plant (grasses) which is first trophic level; herbivores (insects) are the secondary trophic levels which are the plant eaters also called primary consumers belongs to secondary trophic level; then came primary carnivores (frogs) also called secondary consumers which feeds on primary consumers. And, then secondary carnivores (snake) which are the flesh eaters as like primary carnivores also called tertiary consumers; And then quaternary consumer (predatory birds) level came which are the tertiary carnivores. The maximum step in the food chain is 4 or 5.
More Questions From Class 10 Science - Chapter Our Environment
- Q:-
What is biological magnification? Will the levels of this magnification be different at different levels of the ecosystem?
- Q:-
Give any two ways in which biodegradable substances would affect the environment.
- Q:-
Which of the following constitute a food-chain?
(a) Grass, wheat and mango
(b) Grass, goat and human
(c) Goat, cow and elephant
(d) Grass, fish and goat - Q:-
If all the waste we generate is biodegradable, will this have no impact on the environment?
- Q:-
Why are some substances biodegradable and some non-biodegradable?
- Q:-
Which of the following groups contain only biodegradable items?
(a) Grass, flowers and leather
(b) Grass, wood and plastic
(c) Fruit-peels, cake and lime-juice
(d) Cake, wood and grass - Q:-
How can you help in reducing the problem of waste disposal? Give any two methods.
- Q:-
What is ozone and how does it affect any ecosystem?
- Q:-
What is the role of decomposers in the ecosystem?
- Q:-
What will happen if we kill all the organisms in one trophic level?
Popular Questions of Class 10 Science
- Q:-
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
- Q:-
What is a good source of energy?
- Q:-
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
- Q:-
What changes can you make in your habits to become more environment-friendly?
- Q:-
What is the difference between a reflex action and walking?
- Q:-
What is the importance of DNA copying in reproduction?
- Q:-
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?
- Q:-
Why should a magnesium ribbon be cleared before burning in air?
- Q:-
Define the principal focus of a concave mirror.
- Q:-
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Recently Viewed Questions of Class 10 Science
- Q:-
Describe the structure and functioning of nephrons.
- Q:-
In evolutionary terms, we have more in common with
(a) a Chinese school-boy.
(b) a chimpanzee.
(c) a spider.
(d) a bacterium. - Q:-
Compare and contrast nervous and hormonal mechanisms for control and coordination in animals.
- Q:-
Name a mirror that can give an erect and enlarged image of an object.
- Q:-
Find out, from Table 10.3, the medium having highest optical density. Also find the medium with lowest optical density.
Material
mediumRefractive
indexMaterial
mediumRefractive
indexAir 1.0003 Canada
Balsam1.53 Ice 1.31 Water 1.33 Rock salt 1.54 Alcohol 1.36 Kerosene 1.44 Carbon
disulphide1.63 Fused
quartz1.46 Turpentine
oil1.47 Ruby 1.71 Benzene 1.50 Sapphire 1.77 Crown
glass1.52 Diamond 2.42 Table 10.3 Absolute refractive index of some material media
- Q:-
Can any source of energy be pollution-free? Why or why not?
- Q:-
What is the role of the acid in our stomach?
- Q:-
What are the components of the transport system in human beings? What are the functions of these components?
- Q:-
How do auxins promote the growth of a tendril around a support?
- Q:-
Give an example of a double displacement reaction other than the one given in activity 1.10.
- All Chapters Of Class 10 Science
- All Subjects Of Class 10