Chapter 24

Which of the following tissues makes up the majority of the interior of the plant?

• xylem tissue
• Ground tissue

• phloem tissue
• epidermal tissue

During the spring and fall each year thousands of maple trees are tapped for their fluids in order to make "real" maple syrup. If you were to tap into a maple tree to extract the syrup (sucrose) which tissue layer do you want to tap into?

• Cortex
• Epidermis
• Xylem
• Phloem

Which of these vascular tissue cells is alive but lacks a nucleus?

• Companion cells
• Xylem vessels
• Phloem fibers
• Sieve-tube members

Which of these plant tissue types is composed of hollow nonliving tracheids and vessel elements that transport water and nutrient minerals from the roots to the leaves?

• Phloem
• Epidermis
• Meristem
• Xylem

Which statement is NOT true of the epidermis of a plant?

• Cork cells replace epidermal cells on older woody plants

• Root hairs increase the surface area of epidermal cells on roots

• The epidermis is impervious to gas exchange

• The epidermis covers the entire body of a herbaceous plant

• Guard cells are specialized epidermal cells found on root surfaces

Which of the following structures is an underground horizontal stem?

• Stolon
• Tuber
• Rhizome
• Bulb

Mycorrhizae are associations between bacteria and the roots of select plants.

• True

• False

Which of these plant tissue types is composed of sieve-tube members and companion cells, and transports organic nutrients made in the leaves?

• Phloem

• Xylem

• Epidermis

• Cortex

Plant roots function to:

• anchor the plant

• store the products of photosynthesis

• produce hormones that stimulate stem growth

• All of the choices are plant root functions.

You need to identify a plant, but it is winter and the leaves have fallen to the ground and mixed with leaves from other plants. The parts of flowers, fruits, and seed leaves of germinating seeds are not available either. Your best clue to identify the plants as a monocot or a eudicot is to cut the stem and if the vascular bundles are scattered in the stem, it is a monocot.

• Check the color of the stem for identification.
• Look for the presence of thorns on the stem.
• It is a eudicot.
• It is a monocot.