Sugary sap flows through phloem because of pressure changes between sugar sources and sugar sinks. There is always a concentration of sugars at a sugar source.

Sugary sap flows through phloem because of pressure changes between sugar sources and sugar sinks. There is always a higher concentration of sugars at a sugar source.

Explanation:

Options for this question:

The transport of sugar in the plant occurs in the sieve vessels of the phloem. This transport is due to the differences in hydrostatic pressure between the different compartments of the plant, as discussed in the pressure flow-hypothesis.

According to the hypothesis, sugar is more concentrated at the source and less concentrated in the areas where the sugar will be used, there being a difference or gradient of concentration.

The higher concentration of sugars in the source attracts water, which enters by osmosis, and produces an increase in hydrostatic pressure, a factor that triggers the movement of sugar by phloem.

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Pressure flow-hypothesis link

Sugary sap flows through phloem because of pressure changes between sugar sources and sugar sinks. There is always a concentration of sugars at a sugar source.

Explanation:

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.