Question

Pyramid of numbers is

Answer 1

Answer:

Pyramid of number is a graphical representation that shows the number of organisms at each trophic level

Answer 2

Explanation:

Pyramid of numbers:

• A pyramid of numbers is a representation of the numbers of organisms at different trophic levels of a food chain.
• It shows producers at the base, with the various consumers arranged successively upwards.
• The number of organisms generally decreases at each level of the pyramid.

• The producers form the lowest level of the pyramid.
• The producers, in this case grasses, far outnumber the consumers in the food chain.
• Hence, they are depicted as the broadest part of the pyramid.
• A fraction of the energy is lost at each trophic level of a food chain.
• Thus, in general, consumers at each level must eat a large amount of food to obtain enough energy.
• This is why the number of organisms at each trophic level is more than the number of organisms at the next higher level.
• Thus, the primary consumers, in this case grasshoppers, occupy the next narrower level of the pyramid and are lesser in number than the producers.
• Similarly, a smaller number of secondary consumers (frogs) can sustain life by eating the available number of primary consumers.
• This pattern continues for every trophic level, until a single apex predator (eagle) is left at the top of the pyramid.
• Hence, the apex predator is depicted as the narrowest part of the pyramid.