Question 1

What type of cells are joined end-to-end, conduct water and are connected to each other with strips of wall material?

Accepted Answer

Vessel members are joined end-to-end, conduct water, and are connected to each other with strips of wall material called perforation plates.

Question 2

Damage to the ground meristem of a plant would result in

Accepted Answer

The ground meristem is responsible for producing ground tissue, which includes cells involved in photosynthesis. Damage to it would decrease sugar production.

Question 3

A major distinguishing feature between monocot and eudicot stems is the organization of the

Accepted Answer

In monocot stems, vascular bundles are scattered throughout the stem, while in eudicot stems, they are arranged in a ring.

Question 4

Secondary phloem

Accepted Answer

Secondary phloem is part of the inner bark, which is responsible for transporting nutrients throughout the plant.

Question 5

In an experiment, some herbaceous, nonwoody plants were exposed to frequent windy conditions or mechanical shaking for several hours per day.The flexibility of these plants was due to the _____________ cells.

Accepted Answer

Collenchyma cells provide flexible structural support to plants, allowing them to withstand mechanical stress such as wind or shaking.

Question 6

How could you distinguish between a root hair versus a very small root?

Accepted Answer

Root hairs are extensions of single epidermal cells and are responsible for increasing the surface area for absorption, whereas roots are multicellular structures with various tissues.

Question 7

In the vascular bundles of most dicot stems, primary phloem differentiates toward the ________of the stem, while primary xylem differentiates toward the ________of the stem.

Accepted Answer

In dicot stems, the primary phloem differentiates towards the outside of the stem, while the primary xylem differentiates towards the center or middle of the stem.

Question 8

Which of these can found in oak wood but not in pine wood?

Accepted Answer

Vessel members are found in hardwoods like oak, which are angiosperms, but not in softwoods like pine, which are gymnosperms. Pine relies on tracheids for water conduction instead.

Question 9

Your lab instructor hands you a root slide and asks you to show her a cell with condensed chromosomes arranged in a straight line.In which section of the root would you begin your search?

Accepted Answer

The zone of cell division is where active mitosis occurs, and cells in this zone will have condensed chromosomes arranged in a straight line during metaphase.

Question 10

Which plant cells are the most common and the least specialized?

Accepted Answer

Parenchyma cells are the most common and least specialized plant cells, involved in various functions like photosynthesis, storage, and tissue repair.

Question 11

Which of these is not a possible function of trichomes?

Accepted Answer

Trichomes are hair-like structures on plants that can reflect light, store or secrete substances like salt, and defend against insects, but they do not provide structural support.

Question 12

The waterproof cuticle covering the epidermis of land plants helps prevent dehydration, much like the skin of some land animals.As a consequence of having a cuticle, what other evolutionary adaptation was important for most land plants?

Accepted Answer

The cuticle reduces water loss but also limits gas exchange, so stomata are necessary for allowing gas exchange while minimizing water loss.

Question 13

Which of these is not a function of the root cap?

Accepted Answer

The root cap does not perform rapid cell division; this is a function of the meristematic region behind the root cap. The root cap is primarily involved in gravity perception, protection of the root tip, and aiding in the penetration of soil.

Quiz 36: Plant Form