Question

food series is a chain of the population which starts with the producers. It is concerned with
A) Biotic components only
B) energy flow and transfer of nutrients
C) Both A and B
D) Biotic and decomposers

Answer 1

Hint: The linear network of links produced in the food web which starts from the green plants and lasts at the predators is known as the food chain. It is the sequence of species through which food and energy are passed from one level to the next. It includes both biotic and abiotic factors.

Complete answer:
A food chain shows how organisms are related to each other by the food they eat. Each level of the food chain represents a trophic level. The food chain is a linear sequence of organisms where nutrients and energy are transferred from one organism to another. This occurs when one organism consumes another organism. It begins with producers and ends up with decomposers. The food chain consists of the following:
1. Producers: Producers include all green plants in a food chain. They make their own food with the help of sunlight. Producers are the first level of the food chain. They are also known as autotrophs as they make their own food.
3. Consumers: Consumers are organisms that feed on other organisms to obtain energy. It is the second level of the food chain. It includes herbivores which are the animals that eat plants; carnivores which are animals that eat other animals; parasites which live on the other organisms and lastly, the scavengers which feed on the dead animals. The food relation between these organisms is expressed as food chains are concerned with biotic components only. When one organism consumes another in a food chain. Energy is passed from one trophic level to another trophic level in a food chain. Only 10% of energy is passed on to the higher trophic levels and the remaining 90% is eliminated in the form of heat.
Hence, the correct answer is option C.

Note: The interconnection of various food chains that occur naturally and represented graphically is known as a food web. It is the arrangement found in the ecological community of what-eats-whom.