Arrange the Following Five Events in an Order That Explains

question 18

Multiple Choice

Arrange the following five events in an order that explains the mass flow of materials in the phloem.
1) Water diffuses into the sieve tubes.
2) Leaf cells produce sugar by photosynthesis.
3) Solutes are actively transported into sieve tubes.
4) Sugar is transported from cell to cell in the leaf.
5) Sugar moves down the stem.

• A)2,1,4,3,5
• B)1,2,3,4,5
• C)2,4,3,1,5
• D)4,2,1,3,5

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Definitions:

Regressive Income Tax

A taxation method where the tax rate falls as the amount being taxed grows.

Opportunity Cost

The cost of foregone alternatives, representing the benefits one could have received by taking a different decision.

Substitution Effect

The change in consumption patterns due to a change in relative prices, leading consumers to substitute one product for another.

Demand Curve

A curve showing the relation between the price of a good and the quantity consumers are willing and able to buy per period, other things constant.