TLS Online TPP Program

#Question id: 12228


Which of the following examples best describes an ecological community?

#Unit 10. Ecological Principles
  1. The intraspecific competition of members of a brook trout population inhabiting a stream during a given year.
  2. The interactions of all the plant and animal species inhabiting a 2 hectare forest.
  3. The  material cycling  and  energy transformations between the  biotic  and  abiotic  components of  an  open meadow.
  4. The various species of barnacles competing for resources in an intertidal zone.
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TLS Online TPP Program

#Question id: 9280

#Unit 6. System Physiology – Plant

Oxygen-Evolving Organisms Have two Photosystems that Operate in Series, explain by emerson that is the Photosystem I preferentially absorbs far-red light of wavelengths greater than 680 nm; photosystem II preferentially absorbs red light of 680 nm and is driven very poorly by far-red light; Another difference between the photosystems is that,

a.) Photosystem I produces a strong reductant, capable of reducing NADP+, and a weak oxidant

b.) Photosystem I produces a very strong oxidant, capable of oxidizing water, and a weaker reductant than the one produced by photosystem II

c.) Photosystem II produces a strong reductant, capable of reducing NADP+, and a weak oxidant

d.) Photosystem II produces a very strong oxidant, capable of oxidizing water, and a weaker reductant than the one produced by photosystem I

Which statements would be CORRECT?

TLS Online TPP Program

#Question id: 9276

#Unit 6. System Physiology – Plant

The carotenoid b-carotene, whose structure and absorption spectrum at,

TLS Online TPP Program

#Question id: 9273

#Unit 6. System Physiology – Plant

In the higher excited state, chlorophyll is extremely unstable; it rapidly gives up some of its energy to the surroundings as heat, and enters the lowest excited state, the excited chlorophyll has four alternative pathways for disposing of its available energy: fluorescence, Heat loss, energy transfer, photochemistry; all process takes place in which wavelength,

TLS Online TPP Program

#Question id: 9272

#Unit 6. System Physiology – Plant

The quantum yield of photosynthesis falls off drastically for far-red light of wavelengths greater than 680 nm, indicating that far-red light alone is inefficient in driving
photosynthesis, this effect is called

TLS Online TPP Program

#Question id: 9270

#Unit 6. System Physiology – Plant

In the lowest excited state, the excited chlorophyll has four alternative pathways for disposing of its available energy which of the statement of alternative pathway would be INCORRECT?

TLS Online TPP Program

#Question id: 9269

#Unit 6. System Physiology – Plant

The distribution of electrons in the excited molecule is somewhat different from the distribution in the groundstate molecule, Absorption of blue light excites the chlorophyll to a higher energy state than absorption of red light because