Question 1

Most carnivorous plants use their prey as a primary source of
A) nitrogen.
B) energy.
C) carbon.
D) magnesium.
E) potassium.

Accepted Answer

Animals, including insects, are rich sources of nitrogen, and carnivorous plants tend to live in low-nitrogen habitats.

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 best describes the original source of the sugars found in the sap?
A) photosynthesis during the previous summer
B) photosynthesis that winter
C) photosynthesis occurring in the spring while the sap is flowing
D) breakdown of cellulose in the tree
E) absorption from the soil

Accepted Answer

Sugars stored through the winter must have been made by the plant during the previous growing season, since plants are autotrophs.

Question 3

"K" is the chemical symbol for
A) phosphorus.
B) potassium.
C) nickel.
D) krypton.
E) copper.

Accepted Answer

Potassium is one of the main elements in any fertilizer.

Question 4

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?
A) lateral meristem only
B) apical meristem only
C) all types of meristem
D) blade
E) node

Accepted Answer

Apoptosis during the fall involves the death of cells at the base of the petiole where the leaf attaches to the stem.

Question 5

Which two seasons would contribute to tree rings in a deciduous tree found in the north?
A) spring and summer
B) spring and fall
C) winter and spring
D) winter and summer
E) summer and fall

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.

Question 6

The shoot of a plant is the aboveground part of a plant.

Accepted Answer

Shoots are aboveground, though a few modified stems can be found belowground, as is the case for potato tubers.

Question 7

Which best describes a compound leaf?
A) multiple blades attached to a single petiole
B) a single blade attached to a petiole
C) a single leaflet attached to a petiole
D) multiple leaflets attached to a single petiole
E) multiple leaflets attached to multiple petioles

Accepted Answer

A compound leaf has the leaf blade broken into multiple units, each called a leaflet.

Question 8

If you cut a stalk of celery and put it in a glass of water containing red food coloring overnight,the next morning the celery will be red.Through what was the food coloring taken up?
A) phloem
B) stomata
C) xylem
D) dermal tissue
E) ground tissue

Accepted Answer

Water containing coloring enters the xylem at the cut surface of the celery stalk and moves upward towards the leaf blade.

Question 9

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

Accepted Answer

Root hairs are long and thin, which gives them a proportionally large surface area.

Question 10

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

Accepted Answer

The epidermal tissue is on the outside of the plant body, and the vascular tissue is on the inside.

Question 11

If a friend gave you a culinary herb that,season after season,produced no woody growth,you could call it an herbaceous plant.

Accepted Answer

Herbaceous plants can contain at most a small amount of woody tissue.

Question 12

The opening and closing of a plant's stomata is regulated by the flow of ________ ions.
A) phosphorus
B) magnesium
C) copper
D) sulfur
E) potassium

Accepted Answer

When potassium ions enter guard cells, water follows, cell shape changes, and the stoma opens.

Question 13

Where would you expect to find sapwood in a cross section of a tree trunk?
A) in the center
B) just to the inside of the bark
C) in the bark
D) in the roots
E) All answers are correct.

Accepted Answer

Sapwood, the newest xylem cells which are still conducting water, in contrast to older, inactive heartwood, is found towards the outside since it is the most recently produced and is closest to the vascular cambium.

Question 14

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

Accepted Answer

Indeterminate growth, common among plants but rare among animals, keeps going season after season after season.

Question 15

One way to kill a tree is to girdle it by cutting a groove a centimeter into the bark all around the trunk of the tree.Why wouldn't girdling work on a large grass?
A) The vascular bundles are in a ring just under the bark.
B) The vascular bundles are scattered throughout the ground tissue.
C) Monocots don't have vascular bundles.
D) Eudicots don't have vascular bundles.
E) Grasses have taproots.

Accepted Answer

Girdling, to kill a plant, has to cut through all of the phloem, requiring that the phloem be in a ring, which is not the case in monocots such as grass.

Question 16

If you dug up a plant and found it to have fibrous roots,you would suspect it to be a monocot.

Accepted Answer

Monocots have fibrous root systems, while eudicots have taproot systems.

Question 17

Nutrients that an organism needs in fairly large amounts are referred to as
A) total nutrients.
B) macronutrients.
C) micronutrients.
D) solid nutrients.
E) essential nutrients.

Accepted Answer

Macronutrients are needed in large amounts by plants and are found in large amounts in plant bodies.

Question 18

On a hot,sunny day,which of the following would help protect a plant from water loss?
A) both cuticle and stomata
B) both cuticle and cortex
C) both stomata and cortex
D) both cuticle and phloem
E) both phloem and stomata

Accepted Answer

The cuticle is a waxy coating that prevents water loss, and the stomata help control water loss during dry conditions.

Question 19

One way to kill a tree is to girdle it by cutting a groove a centimeter into the bark all around the trunk of the tree.The tree will typically survive that growing season,but will die over the winter.Which is the best explanation for this observation?
A) The phloem was cut, so water and nutrients cannot be taken up to the leaves.
B) The xylem was cut, so sugars cannot be transported to the roots.
C) The xylem was cut, so water and nutrients cannot be taken up to the leaves.
D) Cutting the bark allows access to pathogens that kill the tree.
E) The phloem was cut, so sugars cannot be transported to the roots.

Accepted Answer

Girdling can occur by accident when a weed trimmer or lawn mower cuts the phloem on a small tree.

Question 20

A potato stores a lot of starch.Which tissue would you expect to be most abundant in a potato?
A) dermal tissue
B) vascular tissue
C) ground tissue
D) equal amounts of ground and dermal tissue
E) equal amounts of dermal and vascular tissue

Accepted Answer

The ground tissue, or cortex, is where most of the metabolic activity occurs.

Quiz 21: Plant Form and Function

Most carnivorous plants use their prey as a primary source of

"K" is the chemical symbol for

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?

Which two seasons would contribute to tree rings in a deciduous tree found in the north?

The shoot of a plant is the aboveground part of a plant.

Which best describes a compound leaf?

If you cut a stalk of celery and put it in a glass of water containing red food coloring overnight,the next morning the celery will be red.Through what was the food coloring taken up?

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

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

If a friend gave you a culinary herb that,season after season,produced no woody growth,you could call it an herbaceous plant.

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

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

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

One way to kill a tree is to girdle it by cutting a groove a centimeter into the bark all around the trunk of the tree.Why wouldn't girdling work on a large grass?

If you dug up a plant and found it to have fibrous roots,you would suspect it to be a monocot.

Nutrients that an organism needs in fairly large amounts are referred to as

On a hot,sunny day,which of the following would help protect a plant from water loss?

One way to kill a tree is to girdle it by cutting a groove a centimeter into the bark all around the trunk of the tree.The tree will typically survive that growing season,but will die over the winter.Which is the best explanation for this observation?

A potato stores a lot of starch.Which tissue would you expect to be most abundant in a potato?