Choose the One Most Appropriate Answer for Each

question 5

Multiple Choice

Choose the one most appropriate answer for each.
-companion cells

• A)gives rise to the outermost layer during secondary growth in older stems
• B)transfer sugars into sieve elements
• C)vascular tissue in the root
• D)living cells that conduct sugars and other organic solutes
• E)a layer of specialized parenchyma one or two cells thick in the vascular cylinder that gives rise to lateral roots
• F)clusters of strands containing xylem, phloem, and vascular cambium
• G)substance in xylem cells that give support to upright stems
• H)cells that support soft tissues in fruits and toughen seed coats and nut shells
• I)the principal photosynthetic region of a leaf
• J)regions of undifferentiated cells that can divide rapidly
• K)bottom layer of photosynthetic parenchyma in a leaf with large air spaces between the cells

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Definitions:

Hexanal

An organic compound with the formula C6H12O, known as an aldehyde due to its terminal carbonyl group, and commonly found in the aroma of freshly cut grass.

Acid Chloride

A functional group in organic chemistry, characterized by a carbon atom double-bonded to an oxygen atom and bonded to a chlorine atom.

Primary Alcohol

An alcohol in which the hydroxyl group (-OH) is attached to a carbon atom that has only one other alkyl group linked to it.

Butyllithium

A lithium organic compound often used as a strong base in the synthesis of organic compounds.