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:-
Give two important uses of washing soda and baking soda.
- Q:-
A solution reacts with crushed egg-shells to give a gas that turns lime-water milky. The solution contains
(a) NaCl (b) HCl (c) LiCl (d) KCl
- Q:-
Why is variation beneficial to the species but not necessarily for the individual?
- Q:-
Choose the correct option.
A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes once in each
(a) two revolutions (b) one revolution
(c) half revolution (d) one-fourth revolution - Q:-
Name some devices in which electric motors are used.
- Q:-
Define the principal focus of a concave mirror.
- Q:-
Why are the small numbers of surviving tigers a cause of worry from the point of view of genetics?
- Q:-
State two ways to prevent the rusting of iron.
- Q:-
Calculate the number of electrons constituting one coulomb of charge.
- All Chapters Of Class 10 Science
- All Subjects Of Class 10