PLS ch 6

Herbaceous dicots have a lot of secondary growth that brings about increases in stem diameter

False

Which of the following is not a characteristic of a stem?

Parallel veination

Annual growth rings are the result of one year of secondary xylem

True

Bark is made of crushed secondary phloem and peridum

True

Vascular bundles are composed of xylem and phloem

True

Plasmolysis

causes the plasma membrane to separate and pull away from the cell wall

The study of tree rings is

dendrochronology

Which of the following have a random assortment of vascular bundles

herbaceous monocots

stolons are

horizontal stems modified to facilitate plant distribution

Wilting is NOT the result of

increase hydrostatic pressure

Thorns are

modified stems

Which of the following is NOT a function of stems?

take up mineral nutrients from the soil

The group of plants derives the most significant benefits of secondary xylem

woody dicots

Apical meristems give rise to three primary tissues. Which of the following is NOT one of those tissues? a. xylem b.dermal c. vascular d. ground

xylem