True or false
The number of organisms increases from the lowest trophic level to highest trophic level.

Define trophic level.

Write a note on trophic level.

Mark the statements True (T) or False (F). The number of organisms in a genus is more than that of a species.

True or false The amount of matter and energy gradually increases from producers at lowest level to consumers at the higest level.

Write a short note on Trophic level.

Amount of matter and energy…... the lowest level to the highest level

Which organisms are on the 1st level of this food web?

Which are the different trophic levels in the food chain?

Draw neat labelled diagram Flow of energy through trophic levels.

Question based on paragraph A class of students was taken on an excursion by the school to the banks of a river. They were explained that energy can be transferred from phytoplanktons to humans. This pattem of energy in the ecosystem could be explained as a ‘pyramid of energy’. The pyramid of energy consists of phytoplanktons at the bottom, followed by three successive trophic levels consisting of zooplanktons, fishes and humans respectively. There is a gradual decrease of energy and number of organisms from the base to the apex of the pyramid. The passage of energy is referred to as ‘one way’ transport. Based on the above passage, answer the question Why is the pyramid of energy always upright?