TLS Online TPP Program

#Question id: 29073


Given below is an ecological pyramid, which of the following statements about these pyramid is correct:

#Unit 10. Ecological Principles
  1. Pyramid of number of a grass land ecosystem and pyramid of biomass of an aquatic ecosystem
  2. Pyramid of number of a pond ecosystem and pyramid of biomass of a marine ecosystem
  3. Pyramid of energy of a grassland and pyramid of biomass of an open marine ecosystem
  4. Pyramid of biomass of a grassland and pyramid of number of only in tree ecosystem