Question 1

The tissue that produces cells to thicken a root or stem is the

Accepted Answer

Lateral meristems increase the girth of a stem or root, while apical meristems increase length.

Question 2

The type of plant cell that provides rigid support and is dead at maturity is a

Accepted Answer

Sclerenchyma cells provide rigidity to woody stems.

Question 3

A collective term for all plant tissues outside the vascular cambium is

Accepted Answer

The bark replaces the epidermis and its cuticle for keeping water inside the plant body and pathogens outside.

Question 4

If a gardener wanted to help prevent erosion along a slope,it would be best to plant

Accepted Answer

The fibrous roots of grasses and other monocots make a tough, dense root system which does a very good job of holding onto soil particles.

Question 5

The main phloem-conducting cells are

Accepted Answer

Sieve tube elements transport sugars and amino acids, supported by companion cells.

Question 6

The primary organ of photosynthesis in a plant is the

Accepted Answer

Most plants use their leaves, which have abundant surface area, to perform most photosynthesis.

Question 7

The ________ transport(s)water and dissolved minerals from the roots of the plant to the shoots of the plant.

Accepted Answer

Xylem cells make up the wood in the trunk of a tree.

Question 8

Tomatoes,squash,and beans are considered fruits because they

Accepted Answer

Fruits are the product of the carpels from a flower and contain at least one seed per fruit.

Question 9

You drive a nail into a tree that is 10 feet tall,and come back 10 years later.The tree is now 30 feet tall,but the nail is the same distance from the ground.This is because the tree grows up from

Accepted Answer

Elongation only occurs at apical meristems.

Question 10

When preparing slides to look at mitosis,the tips of onion roots are a good source of cells because they contain ________ where mitosis is taking place consistently.

Accepted Answer

The root tip produces many new cells as this elongates the root and pushes it into new, nutrient-rich parts of the soil.

Question 11

The conducting cells of the xylem are called

Accepted Answer

The two kinds of conducting cells in xylem are tracheids and vessel elements.

Question 12

You are examining a newly discovered plant when you find a dome of cells at the end of its stem.You have found the new plant's

Accepted Answer

Apical meristems are found at the apex-the tip-of any stem or root.

Question 13

The root cap

Accepted Answer

The root cap protects the root apical meristem as it advances through the soil column.

Question 14

You are examining a plant that has recently been discovered.You notice that its leaves have small openings,and that when these openings close,photosynthesis stops.The cells on either side of these pores are

Accepted Answer

Guard cells can change shape to open or close the stomata and thus control water loss and gas exchange.

Question 15

The pores through which leaves exchange gases with the atmosphere are

Accepted Answer

Stomata look like and are named after little mouths.

Question 16

The type of plant cell that provides support without interfering with growth and is familiar as the "strings in celery" is a

Accepted Answer

Collenchyma cells are alive when mature but have very thick, supportive cell walls.

Question 17

You drive a nail into a tree that is 10 feet tall,so that 5 inches of the nail are showing.You come back 10 years later.The tree is now 30 feet tall and only 3 inches of the nail are showing.This is because the tree grows out from

Accepted Answer

Lateral meristems divide parallel to the outside of the tree, creating new layers of cells and a wider trunk.

Question 18

The secondary xylem and phloem are produced by the

Accepted Answer

The vascular cambium is a lateral meristem, present in gymnosperms and eudicots, which works to increase the girth of woody stems.

Question 19

A waxy layer secreted by the epidermal cells of a plant is the

Accepted Answer

The hydrophobic cuticle helps to keep water inside the plants and pathogens outside.

Question 20

If you want to make maple syrup,you have to extract sugary syrup from a stem tissue,so you would tap the ________ tissue.

Accepted Answer

Phloem cells are alive and transport sugars and amino acids dissolved in water.

Quiz 21: Plant Form and Function