Question

Fill in the blanks.
A. Always an upright pyramid in all ecosystems​ ________
B. Chemical(s) transfer from lower to higher trophic levels within a food web​ ____________
C. Development of genetically modified plants to resist certain pests​ _______________

Answer 1

A. Always an upright pyramid in all ecosystems​ : Pyramid of energy
B. Chemical(s) transfer from lower to higher trophic levels within a food web​: Biomagnification
C. Development of genetically modified plants to resist certain pests​ : Genetic strains

• Pyramids of energy are always upright because the energy of producers is always more than primary consumers and so on i.e., the energy goes on decreasing as we move towards the apex from the base.

• Biomagnification is the process by which any substance which cannot be metabolised by the body, increases in concentration in the tissues of organisms as successively higher trophic levels. It occurs as chemicals transfer from lower to higher trophic levels within the food web.

• The creation of genetically modified plants with strains that are resistant to particular pests.