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TLS Online TPP Program

#Question id: 9593

The lower-energy orbital of the positively charged oxidized reaction centre chlorophyll has a vacancy and can accept an electron If the acceptor molecule donates its electron back to the reaction centre chlorophyll, What will happened?

#Unit 6. System Physiology – Plant
  1. The system will be returned to the state that existed before the light excitation, and all the absorbed energy will be converted into heat
  2. The system will be returned to the state that existed before the light excitation, because there is no way to  returned  back to the reaction centre
  3. The system will be returned to the state that existed before the light excitation, and all the absorbed energy will be converted into emission of light
  4. System will be returned to the state that existed before the light excitation, and all the absorbed energy will be converted into re-emitting energy as a photon
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TLS Online TPP Program

#Question id: 10228

#Unit 6. System Physiology – Plant

Photorespiration and the quantum yield differ between C3 and C4 photosynthesis, with changes particularly noticeable as temperatures vary quantum yield for photosynthesis as a function of leaf temperature in C3 plants and C4 plants. Following are some statements  based on this study.

 a.) In the C4 plants the quantum yield remains constant with temperature, reflecting low rates of photorespiration

 b.) At lower temperatures the quantum yield of C3 plants is higher than that of C4 plants

c.) C3 photosynthesis is more efficient at lower temperatures

 d.) At higher temperatures the quantum yield of C3 plants is higher  than that of C4 plants

 Which one of the following combination of above statements is correct?
TLS Online TPP Program

#Question id: 10349

#Unit 6. System Physiology – Plant

Elevated plastid levels of glutamine stimulate the activity of glutamate synthase (also known as glutamine:2- oxoglutarate aminotransferase, or GOGAT). Given below some of the statements about GOGAT, which one of the following is incorrect?
TLS Online TPP Program

#Question id: 11627

#Unit 8. Inheritance Biology

The interaction of two loci that determine fruit color in summer squash, which is commonly found in one of three colors: yellow, white, or green. When a homozygous plant that produces white squash is crossed with a homozygous plant that produces green squash and the F1 plants are crossed with each other, the following results are obtained:

 12/16 plants with white squash

 3 /16 plants with yellow squash

 1 /16 plants with green squash

 This is the case of___
TLS Online TPP Program

#Question id: 2663

#Unit 2. Cellular Organization

A ______________ is a collection of clones that, among themselves, contain all the DNA sequences of the organism.
TLS Online TPP Program

#Question id: 26872

#Unit 10. Ecological Principles

What are the correct sequence steps of succession?