TLS Online TPP Program

#Question id: 9594


The first reaction that converts electron energy into chemical energy—What will happened in  the primary photochemical event—

#Unit 6. System Physiology – Plant
  1. The transfer of an electron from the excited state of a chlorophyll in the reaction centre to an acceptor molecule-pheophytin
  2. The reaction centre chlorophyll is in an oxidized state (electron deficient, or positively charged), and the nearby electron acceptor molecule is reduced (electron rich, or negatively charged)
  3. The reaction centre chlorophyll is in an oxidized state (electron deficient, or negatively charged), and the nearby electron acceptor molecule is reduced (positively charged)
  4. The transfer of an electron from the excited state of a chlorophyll in the reaction centre to an acceptor molecule- plastocyanin
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TLS Online TPP Program

#Question id: 9250

#Unit 9. Diversity of Life Forms

Of the following statements about protected areas that have been established to preserve biodiversity, which one is not correct?

TLS Online TPP Program

#Question id: 9251

#Unit 9. Diversity of Life Forms

Which of the following is responsible for the differences in summer and winter temperature stratification of deep temperate zone lakes?

TLS Online TPP Program

#Question id: 9252

#Unit 9. Diversity of Life Forms

Which of these environmental factor(s) is/are the key determining factor(s) that control(s) the biotic structure of aquatic biomes?

TLS Online TPP Program

#Question id: 9253

#Unit 9. Diversity of Life Forms

A certain species of pine tree survives only in scattered locations at elevations above 2,800 meters in the western United States. To understand why
this tree grows only in these specific places, an ecologist should ________.

TLS Online TPP Program

#Question id: 9254

#Unit 9. Diversity of Life Forms

Organisms evolve over generations to become adapted to the environmental conditions to which they are exposed. The diversity of organisms that
occurs in any particular area thus may be largely determined by the abiotic factors limiting survivorship and reproduction of organisms in a region. Which of the following limit the range of Saguaro cactus in North America?

I) pollinators

II) sunlight

III) precipitation

IV) temperature

TLS Online TPP Program

#Question id: 9255

#Unit 9. Diversity of Life Forms

Studying species transplants is a way that ecologists ________.