Question 1

Stems with closed vascular bundles are capable of secondary growth.

Accepted Answer

A) True 
 B)False

Question 2

Extensions of vascular tissues into the leaves from the stem are called:

Accepted Answer

A)   leaf traces.
B)   leaf trace gaps.
C)   branch traces.
D)   stem bundles.
E)   sympodia.F) C) and D)
G) B) and D)

Question 3

The homeotic mutation that results in "double flowers" in some rose varieties causes ______ to be converted into ______.

Accepted Answer

A)   sepals; carpels
B)   petals; stamens
C)   stamens; carpels
D)   petals; sepals
E)   stamens; petalsF) A) and B)
G) D) and E)

Question 4

Most eudicot leaves have netted venation.

Accepted Answer

A) True 
 B)False

Question 5

Plants that are characterized as xerophytes:

Accepted Answer

A)   are adapted to areas that are neither too wet nor too dry.
B)   are adapted to dry habitats.
C)   grow wholly or partly submerged.
D)   usually have fewer stomata than other types of plants.
E)   may lack stomata in some leaves.F) A) and B)
G) C) and E)

Question 6

A stolon is different from a rhizome in that a stolon:

Accepted Answer

A)   is a leaf.
B)   is a stem.
C)   is a root.
D)   grows aboveground.
E)   grows underground.F) A) and E)
G) A) and D)

Question 7

Leaves that lack a petiole are said to be sessile.

Accepted Answer

A) True 
 B)False

Question 8

A prickle is a modification of:

Accepted Answer

A)   a branch.
B)   a leaf.
C)   the epidermis.
D)   a stem.
E)   a flower.F) A) and B)
G) A) and E)

Question 9

Bulliform cells are epidermal cells that occur in longitudinal rows.

Accepted Answer

A) True 
 B)False

Question 10

A leaf having a rachis is a ______ leaf.

Accepted Answer

A)   simple
B)   palmately compound
C)   pinnately compound
D)   whorled
E)   sessileF) D) and E)
G) A) and E)

Question 11

The auxin-based model of phyllotaxy states that auxin:

Accepted Answer

A)   in young primordia lower the auxin concentration in neighboring cells.
B)   in older primordia stimulate internode elongation.
C)   causes the tunica to buckle.
D)   in young primordia raises the auxin concentration in neighboring cells.
E)   in the apical meristem stimulates cells to divide.F) All of the above
G) C) and D)

Question 12

In most monocots, the base of the leaf is expanded into a ______.

Accepted Answer

A)   blade.
B)   stipule.
C)   sheath.
D)   lamina.
E)   petiole.F) None of the above
G) A) and D)

Question 13

A succulent leaf is one that is specialized for:

Accepted Answer

A)   growth in aqueous habitats.
B)   chemical defense.
C)   protection against predators.
D)   water storage.
E)   food storage.F) C) and D)
G) B) and C)

Question 14

Which of the following events does NOT occur in a shoot apex during flower development?

Accepted Answer

A)   A change from determinate to indeterminate growth
B)   Elongation of the internodes
C)   Early development of lateral buds below the apex
D)   An increase in mitosis
E)   A change in shape of the apex to broad and dome-likeF) D) and E)
G) C) and E)

Question 15

Which of the following is(are)  NOT produced by the shoot apical meristem?

Accepted Answer

A)   leaf primordia
B)   a protective covering
C)   bud primordia
D)   phytomeres
E)   cells of the primary plant bodyF) A) and C)
G) A) and B)

Question 16

Studies of Arabidopsis mutants have identified classes of ______ that affect the identity of floral organs.

Accepted Answer

A)   meristematic activities
B)   homeotic genes
C)   hormones
D)   tunica-corpus organizations
E)   environmental factorsF) All of the above
G) D) and E)

Question 17

Sun and shade leaves can be found on the same plant.

Accepted Answer

A) True 
 B)False

Question 18

Which layer(s)  of the peripheral zone of the shoot apical meristem are the founder cells?

Accepted Answer

A)   L1 only
B)   L2 only
C)   L3 only
D)   L1 and L2 only
E)   L1, L2, and L3F) B) and C)
G) A) and E)

Question 19

Compared with sun leaves, shade leaves:

Accepted Answer

A)   have thicker-walled epidermal cells.
B)   have a lower ratio of mesophyll surface area to leaf blade surface area.
C)   have more extensive vascular systems.
D)   are thicker.
E)   are smaller.F) C) and D)
G) B) and C)

Question 20

The initials of the corpus tunica-corpus usually divide anticlinally.

Accepted Answer

A) True 
 B)False

Exam 25: The Shoot: Primary Structure and Development

The initials of the corpus tunica-corpus usually divide anticlinally.

Correct AnswerverifiedShow Answer

Plants that are characterized as xerophytes:

Correct AnswerverifiedShow Answer

The homeotic mutation that results in "double flowers" in some rose varieties causes ______ to be converted into ______.

Correct AnswerverifiedShow Answer

Compared with sun leaves, shade leaves:

Correct AnswerverifiedShow Answer

Leaves that lack a petiole are said to be sessile.

Correct AnswerverifiedShow Answer

Which of the following is(are) NOT produced by the shoot apical meristem?

Correct AnswerverifiedShow Answer

Which layer(s) of the peripheral zone of the shoot apical meristem are the founder cells?

Correct AnswerverifiedShow Answer

In most monocots, the base of the leaf is expanded into a ______.

Correct AnswerverifiedShow Answer

A stolon is different from a rhizome in that a stolon:

Correct AnswerverifiedShow Answer

Most eudicot leaves have netted venation.

Correct AnswerverifiedShow Answer

Bulliform cells are epidermal cells that occur in longitudinal rows.

Correct AnswerverifiedShow Answer

Stems with closed vascular bundles are capable of secondary growth.

Correct AnswerverifiedShow Answer

Which of the following events does NOT occur in a shoot apex during flower development?

Correct AnswerverifiedShow Answer

A succulent leaf is one that is specialized for:

Correct AnswerverifiedShow Answer

A leaf having a rachis is a ______ leaf.

Correct AnswerverifiedShow Answer

Extensions of vascular tissues into the leaves from the stem are called:

Correct AnswerverifiedShow Answer

Studies of Arabidopsis mutants have identified classes of ______ that affect the identity of floral organs.

Correct AnswerverifiedShow Answer

Sun and shade leaves can be found on the same plant.

Correct AnswerverifiedShow Answer

The auxin-based model of phyllotaxy states that auxin:

Correct AnswerverifiedShow Answer

A prickle is a modification of:

Correct AnswerverifiedShow Answer

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The homeotic mutation that results in "double flowers" in some rose varieties causes to be converted into .

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