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Which of the following is the pathway for water transport in a plant?

root hairs → cortex → vascular cylinder → leaf cells

What organic substance makes the walls of sclerenchyma cells tough and hard?

(a). Suberin
(b). Stomata
(c). Trichomes
(d). Cuticle
(e). Lignin

(e). Lignin

Trees are often identified by their leaves. What information about the leaves would you need to observe in order to identify the tree?

Blades, pattern of venation, and arrangement on stem

You need to identify a plant but it is winter and the leaves have fallen to the ground mixed with others. The parts of flowers, fruits, and seed leaves of germinating seeds are not available either. Your best clue to whether it is a monocot or a eudicot is to

cut the stem and if the vascular bundles are scattered in the stem, it is a monocot.

An aphid is an insect that has mouthparts to sip plant sap. When placed on a herbaceous stem, it soon has its mouthparts embedded and is withdrawing plant sap. Sometimes so much plant sap is taken that it cannot use all of it and the aphid secretes droplets of the sugar to attract ants that in turn protect and care for the aphids. What layer of cells has the aphid's mouthparts tapped?

phloem

Plant vascular tissue contains

xylem and phloem.

Your task in laboratory is to find cells that have projections to increase surface area for absorption of water and minerals. Which of the following slides would you use to find these cells?

Root slide showing zone of maturation

A plant with small leaves and sunken stomata is most likely to be found in a

desert.

Beans, peas, and other legumes have root nodules that are caused by ____ and have the role of ____.

bacteria, taking up and reducing atmospheric nitrogen

Which is NOT a correct association?

(a). strawberry-stolon
(b). onion-bulb
(c). iris-rhizome
(d). gladiolus-bulb
(e). potato-tuber

(d). gladiolus-bulb

Which cell found in phloem tissue has a nucleus?

companion cell

If you wanted to grow a new plant in the laboratory with the appropriate technology, which tissue type would you NOT start with?

sieve-tube members

Which structure is directly associated with the terminal bud?

Shoot tip

Which of the following is the correct sequence of zones in a longitudinal section of a root, starting from the bottom?

zone of cell division → zone of elongation → zone of maturation

Which statement about leaves is NOT correct?

(a). The photosynthetic mesophyll is made up of an upper spongy layer and a lower palisade layer.
(b). The epidermis is covered by a waxy layer of cuticle that reduces water loss.
(c). Gas exchange occurs through tiny openings in the leaf surface called stomata.
(d). Vascular tissue is arranged in a net pattern in eudicots and a parallel pattern in monocots.
(e). Regulation of gas exchange through the leaf is the responsibility of the guard cells.

(a). The photosynthetic mesophyll is made up of an upper spongy layer and a lower palisade layer.

The tendrils that support vining plants are a type of stem.

(a). True
(b). False

(b). False

Primary growth of a stem is due to the activity of the vascular meristem.

(a). True
(b). False

(b). False

Considering that leaf stomata have the conflicting functions of allowing gaseous carbon dioxide into the leaf, yet preserving the plant's supply of water, which of the following is NOT reasonable?

(a). Tree leaves that orient flat and present the top side to the sun would have most of their stomata on the bottom of the leaf.
(b). A submerged-water plant would have no stomata.
(c). Corn, oats, rice, and wheat (all monocots) have relatively upright blades with sunlight hitting both sides and would have stomata distributed fairly evenly on both sides.
(d). Leaves of plants in dry areas will have more stomata than leaves of plants in humid areas.
(e). Plants in arid environments open their stomata at night when temperatures are cooler and evaporation occurs less.

(d). Leaves of plants in dry areas will have more stomata than leaves of plants in humid areas.

Which of the following is a monocot?

(a). Dandelion
(b). Oak trees
(c). Maple trees
(d). Palm trees
(e). Roses

(d). Palm trees

Some plant leaves and stems are covered with hairs.

(a). True
(b). False

(a). True

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