Question

Food chain generally consists of only three or four steps.Why? Give the answer using NCERT Book​

Answer 1

T⃗H⃗R⃗E⃗E⃗ O⃗R⃗ F⃗O⃗U⃗R⃗ S⃗T⃗E⃗P⃗S⃗ O⃗N⃗L⃗Y⃗? S⃗I⃗N⃗C⃗E⃗ S⃗O⃗ L⃗I⃗T⃗T⃗L⃗E⃗ E⃗N⃗E⃗R⃗G⃗Y⃗ I⃗S⃗ A⃗V⃗A⃗I⃗L⃗A⃗B⃗L⃗E⃗ F⃗O⃗R⃗ T⃗H⃗E⃗ N⃗E⃗X⃗T⃗ L⃗E⃗V⃗E⃗L⃗ O⃗F⃗ C⃗O⃗N⃗S⃗U⃗M⃗E⃗R⃗S⃗, A⃗N⃗D⃗ F⃗O⃗R⃗ T⃗H⃗I⃗S⃗ R⃗E⃗A⃗S⃗O⃗N⃗ F⃗O⃗O⃗D⃗ C⃗H⃗A⃗I⃗N⃗S⃗ G⃗E⃗N⃗E⃗R⃗A⃗L⃗L⃗Y⃗ C⃗O⃗N⃗S⃗I⃗S⃗T⃗ O⃗F⃗ O⃗N⃗L⃗Y⃗ T⃗H⃗R⃗E⃗E⃗ O⃗R⃗ F⃗O⃗U⃗R⃗ S⃗T⃗E⃗P⃗S⃗. T⃗H⃗E⃗ L⃗O⃗S⃗S⃗ O⃗F⃗ E⃗N⃗E⃗R⃗G⃗Y⃗ A⃗T⃗ E⃗A⃗C⃗H⃗ S⃗T⃗E⃗P⃗ I⃗S⃗ S⃗O⃗ G⃗R⃗E⃗A⃗T⃗ T⃗H⃗A⃗T⃗ V⃗E⃗R⃗Y⃗ L⃗I⃗T⃗T⃗L⃗E⃗ U⃗S⃗A⃗B⃗L⃗E⃗ E⃗N⃗E⃗R⃗G⃗Y⃗ R⃗E⃗M⃗A⃗I⃗N⃗S⃗ A⃗F⃗T⃗E⃗R⃗ F⃗O⃗U⃗R⃗ T⃗R⃗O⃗P⃗H⃗I⃗C⃗ L⃗E⃗V⃗E⃗L⃗S⃗.

Answer 2

Answer:

A food chain’s length is restricted to just 3 or 4 steps due to energy loss. Moreover, the energy added to the biomass of each trophic level is significantly lower than the one preceding it. This occurs as a result of material wastage from subsequently trophic levels and for the maintenance of various life processes. Consequently, the shorter the food chain, the more energy that is available to the final consumer. A shorter food chain is also