Question

Sequence of species through which organic of food passes in a community is called
А. Food chain
B. Ecosystem
C. Population
D. Ecological pyramid

Answer 1

Hint: Ecology deals and described with the study of interactions and interrelationships between organisms and their environment. It is a branch of science which weaves the different areas of biological information into a unifying principle thus, it gives the holistic perspective to biology.

Complete answer:
The various levels that come under ecological organisations includes organism , population , community, ecosystem , landscape , biome and biosphere . These all interact with each other and make life possible and sustainable on earth.

Now let us study the given options :-
> Food chain :- the series of organisms which are connected with each other and food passes from one step or one organism to another is called a food chain . There are maximum 3-4 trophic levels in the food chain.

> Ecosystem :- It is composed of a biological community, that includes a biotic component integrated with its physical environment that is an abiotic component through the exchange of energy and recycling of the nutrients.

> Population :- it comes under the study of ecology. It includes the group of individuals that involves the same species . They all survive in a similar habitat.

> Ecological pyramid :- these are defined as graphical representations and forms of various ecological parameters at the successive trophic levels of food chains with producers at the base, top carnivores at the apex and intermediate levels in between.

Hence, the correct answer is option (A).

Note: The transfer of energy from one trophic level to another trophic level is accompanied by loss of energy at each level or step. When the plants are eaten by herbivores, about 10% of energy in the food is fixed into animal flesh while 90% is consumed in ingestion, respiration, maintenance of body heat and other activities.