Question 1

Grasses and other monocots usually have fibrous root systems.

Accepted Answer

Monocots typically have fibrous root systems which consist of many thin, branching roots that spread out close to the surface of the soil. This allows for efficient absorption of water and nutrients from a wide area.

Question 2

In the spring before the leaves come out,maple trees are often tapped to collect sap to make syrup.The sugars were stored in the wood of the tree as starch and then released as temperatures rise above freezing in late winter.Which of the following tissues would contain the starch over the winter?

Accepted Answer

Parenchyma tissue is responsible for storage of food materials such as starch in the plant. Therefore, it is likely that starch would have been stored in the parenchyma tissue of the maple tree over the winter. The xylem and phloem are responsible for the transport of water and nutrients throughout the plant, while collenchyma tissue provides support and structure to young plant parts. The roots may also play a role in the storage of sugars, but since the question specifically asks about tissues within the tree, root tissue is not the best choice.

Question 3

Most carnivorous plants use their prey as a primary source of

Accepted Answer

Carnivorous plants often grow in nitrogen-poor soils, and therefore rely on their prey to provide them with nitrogen, which is an essential nutrient for plant growth.

Question 4

Vegetative edible plant parts include roots,fruits,stems,and tubers.

Accepted Answer

The answer of Vegetative edible plant parts include roots,fruits,stems,and tubers....

Question 5

Herbaceous plants are those that contain little or no woody tissue.

Accepted Answer

Herbaceous plants are non-woody plants with soft, green stems that die back to the ground each year. Examples include grasses, annual flowers, and vegetables like lettuce and spinach. They do not contain significant amounts of woody tissue like trees and shrubs do.

Question 6

The three main types of tissue formed by plant cells are ground tissue,dermal tissue,and vascular tissue.

Accepted Answer

This statement is true. Ground tissue is responsible for storage, support, and metabolic functions. Dermal tissue provides a protective covering for the plant, while vascular tissue transports water, nutrients, and other substances throughout the plant.

Question 7

In woody plants the vascular cambium produces xylem and the cork cambium produces phloem.

Accepted Answer

In woody plants, the vascular cambium produces both xylem and phloem, while the cork cambium produces cork cells for the outer bark.

Question 8

Which of the following best describes a compound leaf?

Accepted Answer

A compound leaf consists of multiple leaflets attached to a single petiole. The petiole is the stalk that attaches the leaf to the stem. In contrast, a simple leaf has a single blade attached to a petiole.

Question 9

Apoptosis is Greek for "dropping off" and refers to the programmed death of cells that attach the petiole to the stem.When these cells die in the fall,the leaves drop.Cells in which part of the plant are undergoing apoptosis?

Accepted Answer

Apoptosis during the fall involves the death of cells at the base of the petiole where the lead attaches to the stem.Please see section 21.5 for more information.

Question 10

The opening and closing of a plant's stomata are regulated by the flow of _____________ ions.

Accepted Answer

The opening and closing of stomata in plants are controlled by the flow of potassium ions. When a plant cell accumulates potassium ions, it causes water to move into the cell and the cell to swell, causing the stomata to open. Conversely, when potassium ions are lost from the cell, water moves out and the cell shrinks, resulting in stomatal closure.

Question 11

The vegetative parts of plants are those parts that are reproductive.

Accepted Answer

The vegetative parts of plants are those parts that are involved in growth, nutrition, and support, such as leaves, stems, and roots. Reproductive parts include flowers, fruits, and seeds.

Question 12

The epidermis of a plant leaf is usually many layers thick and carries out most of the photosynthesis in a leaf.

Accepted Answer

The epidermis of a plant leaf is usually only one layer thick and does not carry out photosynthesis. The majority of photosynthesis happens in the palisade and spongy mesophyll layers located beneath the epidermis.

Question 13

In a deciduous tree found in the north,which two seasons would contribute to tree rings?

Accepted Answer

Tree rings are caused by the annual combination of large-celled spring wood and small-celled summer wood,the variation in size being due to the variation in the availability of water.Please see section 21.5 for more information.

Question 14

Where would you expect to find sapwood in a cross section of a tree trunk?

Accepted Answer

Sapwood is the living, outermost layer of the tree that is responsible for transporting water and nutrients from the roots to the rest of the tree. It is located just under the bark, so it would be expected to be found in the outermost part of a cross section of a tree trunk.

Question 15

Root hairs greatly increase the absorptive surface area of a root.

Accepted Answer

Root hairs are thin, elongated outgrowths of root epidermal cells that greatly increase the absorptive surface area of a root. This allows for increased absorption of water and nutrients from the soil.

Question 16

The shoot of a plant is the above-ground part of a plant.

Accepted Answer

The shoot of a plant refers to the stem and leaves that are above ground level.

Question 17

Veins are the vascular bundles inside a leaf.

Accepted Answer

Veins are the vascular bundles inside a leaf, which carry water and nutrients throughout the plant.

Question 18

In the spring before the leaves come out,maple trees are often tapped to collect sap to make syrup.The sugars were stored in the wood of the tree as starch and then released as temperatures rise above freezing in late winter.The resulting sucrose is released into the vessels that transport water.Which of the following would a person tap to collect sap from a maple tree?

Accepted Answer

The vessels that transport water, known as xylem, are where the sucrose is released from the maple tree. Therefore, a person would tap the xylem to collect sap from a maple tree.

Question 19

If a plant exhibits a pattern of indeterminate growth,it stops growing when it reaches mature size.

Accepted Answer

The statement is incorrect. If a plant exhibits indeterminate growth, it does not stop growing when it reaches mature size. Instead, it continues to grow and produce new leaves, flowers, and fruits throughout its lifespan.

Question 20

Apoptosis is Greek for "dropping off" and refers to the programmed death of cells that attach the leaf to a stem.If you cut a branch in the summer,the leaves will not fall off in the autumn.What can you conclude from this observation?

Accepted Answer

Apoptosis is a programmed form of cell death that occurs in living cells. Therefore, if the leaves on a cut branch do not fall off in the autumn, they must still be alive and capable of going through apoptotic cell death when the time comes. This suggests that the cells in the leaf are actively maintained and regulated by the tree, rather than being killed by external factors such as a lack of nutrients or water.

Quiz 21: Plant Form and Function