Chloroplast movement is widespread among algae, mosses, and leaves of higher plants, what will be the orientation of chloroplast in dark as well as in light?

a.) In dark, chloroplasts gather at the cell surfaces parallel to the plane of the leaf so that they are aligned perpendicularly to the incident light

b.) Under high light, , the chloroplasts move to the cell surfaces that are parallel to the incident light, thus avoiding excess absorption of light

c.) the orientation of the chloroplasts in the dark is such that maximizes absorption of light

d.) the orientation of the chloroplasts in the high light is such that maximizes absorption of light

Which of the following statements is correct?

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#Question id: 12655

#Unit 6. System Physiology – Plant

Which proteins or enzymes require act as a co-repressors along with the JAZ–COI1 complex and are instrumental in maintaining the chromatin in an inactive state?

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#Question id: 12656

#Unit 6. System Physiology – Plant

Which one of the following lipases is activated on the plasma membrane, during octadecanoid pathway leads to the activation of jasmonic acid?

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#Question id: 12657

#Unit 6. System Physiology – Plant

Experiments performed in the laboratory of Anne Osbourn at the John Innes Centre  utilized genetic approaches to demonstrate the role of saponins in defense against pathogens of oat. If Mutant oat lines then,

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#Question id: 12658

#Unit 7. System Physiology – Animal

In a person on a high (200 mmol/day) potassium diet, which part of the nephron would be expected to secrete the most potassium?

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#Question id: 12659

#Unit 7. System Physiology – Animal

 Which of the following would tend to decrease plasma potassium concentration by causing a shift of potassium from the extracellular fluid into the cells?

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#Question id: 12660

#Unit 10. Ecological Principles

Which of the following might be expected in the logistic model of population growth?