Given below are some of the statements that regulate the sucrose loading mechanism;

A) The solute potential or, more likely, the turgor pressure of the sieve elements

B) Sucrose concentration in the apoplast

C) The available number of symporter protein molecules

Possible observation given on how to avoid regulation;

i) increase in sieve element turgor above a certain threshold would lead to a compensatory increase in loading

ii) High sucrose concentrations in the apoplast would increase phloem loading

iii) SUT1 transporter mRNA and protein have been lower after 15 hours of darkness than after a light treatment. These data suggest that the concentration of SUT1 transporter molecules could regulate loading

iv) Decrease in sieve element turgor below a certain threshold would lead to a compensatory increase in loading

v) The transporter mRNA and protein high in darkness than lower in the light treatment

Which of the following combinations represents correct observation?

TLS Online TPP Program

#Question id: 15724

#Unit 11. Evolution and Behavior

Neo-Lamarckism includes several theories based on the old idea of inheritance of modifications acquired during an organism’s lifetime. In a famous experiment done by,

TLS Online TPP Program

#Question id: 15723

#Unit 11. Evolution and Behavior

Neutral theory of molecular evolution of is given by,

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#Question id: 15722

#Unit 11. Evolution and Behavior

The variation that arises is directed toward fixed goals, so that a species evolves in a predetermined direction by some kind of internal drive, without the aid of natural selection. This hypothesis is known as,

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#Question id: 15721

#Unit 11. Evolution and Behavior

Lamarck argued that species differ from one another because they have different needs, and so use certain of their organs and appendages. This hypothesis is known as?

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#Question id: 15720

#Unit 11. Evolution and Behavior

The geologists ________ expounded the principle of uniformitarianism, holding that the same processes operated in the past as in the present and that the data of geology should therefore be explained by causes that we can now observe.

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#Question id: 15719

#Unit 11. Evolution and Behavior

Carolus Linnaeus (1707–1778), who established the framework of modern taxonomy in his Systema Naturae (1735), won worldwide fame for his exhaustive classification of plants and animals, undertaken in the hope of discovering the pattern of the creation. Linnaeus classified,