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TLS Online TPP Program

#Question id: 11284

Which of the following could qualify as a top-down control on a grassland community?

#Unit 10. Ecological Principles

  1. limitation of plant biomass by rainfall amount

  2. influence of temperature on competition among plants
  3. influence of soil nutrients on the abundance of grasses versus wildflowers
  4. effect of grazing intensity by bison on plant species diversity
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TLS Online TPP Program

#Question id: 10506

#Unit 6. System Physiology – Plant

Plant growth promoting rhizobacteria (PGPRs) such as Pseudomonas aeruginosa, that alleviate plant abiotic or biotic stress in soil by releasing of
TLS Online TPP Program

#Question id: 15735

#Unit 12. Applied Biology

How meristem cultures are able to generate pathogen free plants. Choose the most appropriate statement.
TLS Online TPP Program

#Question id: 11008

#Unit 7. System Physiology – Animal

Which of the following events is associated with the first heart sound?
TLS Online TPP Program

#Question id: 12781

#Unit 10. Ecological Principles

Subtraction of which of the following will convert gross primary productivity into net primary productivity?
TLS Online TPP Program

#Question id: 8922

#Unit 9. Diversity of Life Forms

Which statement is most consistent with the hypothesis that the Cambrian explosion was caused by the rise of predator-prey relationships?