Determine the Number of Lone Pairs of Electrons on the Indicated

question 48

Multiple Choice

Determine the number of lone pairs of electrons on the indicated atom.

• A)1
• B)2
• C)3

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Definitions:

Vascular Cambium

Vascular cambium is a layer of dividing cells in plants, located between the xylem and phloem, responsible for the secondary growth that increases the thickness of stems and roots.

Xylem

The vascular tissue in plants responsible for the conduction of water and minerals from the roots to the leaves and shoots.

Phloem

The vascular tissue in plants responsible for the transport of nutrients, especially sugars, produced by photosynthesis to various parts of the plant.

Cortex

(1) The outer part of an organ, such as the cortex of the kidney. Compare with medulla. (2) The tissue between the epidermis and vascular tissue in the stems and roots of many herbaceous plants.