Pre-Main Sequence Stars (Not Protostars) on the H-R Diagram Are

question 39

Multiple Choice

Pre-main sequence stars (not protostars) on the H-R Diagram are _____.

• A) above and to the right of supergiants
• B) below and to the left of the main sequence
• C) below and to the left of white dwarfs
• D) above and to the right of the main sequence
• E) not on the H-R Diagram yet

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Definitions:

Cork Cambium

A layer of tissue in plants that produces cork cells for protection and waterproofing.

Pericycle

A layer of cells found just inside the endodermis of plant roots, involved in the formation of lateral roots.

Endodermis

The innermost layer of cells in the root cortex of plants that regulates the transfer of water and nutrients to the vascular tissue.

Food Storage

Methods and techniques used to preserve food substances for later consumption.