Each of the Following Is a Physical Barrier to Infection

question 146

Multiple Choice

Each of the following is a physical barrier to infection except

• A) body hair.
• B) epithelium.
• C) secretions.
• D) complement.
• E) basement membranes.

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Definitions:

Vascular Tissue

Plant tissue responsible for the transport of water, nutrients, and sugars throughout the plant body, comprising principally of xylem and phloem.

Stomata

Tiny openings or pores in plant leaves and stems that allow for gas exchange, facilitating photosynthesis and transpiration.

Vascular Cambium

A layer of tissue in plants that is the source of new cells for growth in diameter of stems and roots.

Secondary Growth

This is the process in plants that results in the thickening of stems and roots, mainly due to the activity of the vascular cambium and cork cambium.