TLS Online TPP Program

#Question id: 9234


What is a critical load?

#9. Diversity of Life Forms
  1. the amount of nutrient augmentation necessary to bring a depleted habitat back to its former level
  2. the level of a given toxin in an ecosystem that is lethal to 50 percent of the species present
  3. the amount of added nutrient that can be absorbed by plants without damaging ecosystem integrity
  4. the number of predators an ecosystem can support that effectively culls prey populations to healthy levels

More Questions
TLS Online TPP Program

#Question id: 9585

#6. System Physiology – Plant

In light reaction the reaction centre of PSII  receives electron from water molecules by splitting into oxygen, If 5 oxygen molecules evolved per 50 quanta was

absorbed then what is the quantum yield?

TLS Online TPP Program

#Question id: 9589

#6. System Physiology – Plant

The physical mechanism by which excitation energy is conveyed from the chlorophyll that absorbs the light to the reaction centre, By this mechanism the excitation energy is transferred from one molecule to another by a nonradioactive process, this mechanism is known as

TLS Online TPP Program

#Question id: 9595

#6. System Physiology – Plant

The process is that the absorbed photon causes an electron rearrangement in the reaction centre chlorophyll, followed by an electron transfer process in which part of the energy in the photon is captured in the form of

TLS Online TPP Program

#Question id: 9596

#6. System Physiology – Plant

The reaction centre chlorophyll is transiently in an oxidized state after losing an electron and before being re-reduced by its electron donor, what characteristics has been shown by chlorophylls in an oxidized state?

TLS Online TPP Program

#Question id: 9598

#6. System Physiology – Plant

In the oxidized state, reaction centre chlorophylls contain an unpaired electron, Molecules with unpaired electrons can often be detected by a magnetic-resonance technique known as

TLS Online TPP Program

#Question id: 9602

#9. Diversity of Life Forms

The legless condition that is observed in several groups of extant reptiles is the result of