Question 1

A leaf arrangement in which there are two leaves at a node is called _________.

Accepted Answer

A)  alternate 
B)  opposite 
C)  palmate 
D)  whorled 
E)  crowded 
A)  alternate 
B)  opposite 
C)  palmate 
D)  whorled 
E)  crowded

Question 2

Which of the following specialized leaves are found in plants living in arid environments?

Accepted Answer

A)  window leaves 
B)  flower pot leaves 
C)  reproductive leaves 
D)  succulent leaves 
E)  Both [ window leaves and succulent leaves] 
A)  window leaves 
B)  flower pot leaves 
C)  reproductive leaves 
D)  succulent leaves 
E)  Both [ window leaves and succulent leaves]

Question 3

Most natural ropes and twines are made from leaf fibers.

Accepted Answer

A) True 
 B)False

Question 4

Which of the following do guard cells and palisade mesophyll cells have in common?

Accepted Answer

A)  cuticle wax 
B)  thick walls 
C)  chloroplasts 
D)  vascular bundles 
E)  fibers 
A)  cuticle wax 
B)  thick walls 
C)  chloroplasts 
D)  vascular bundles 
E)  fibers

Question 5

In most leaves the number of stomata per square centimeter of surface is

Accepted Answer

A)  25-50. 
B)  100-200. 
C)  250-500. 
D)  500-750. 
E)  over 1,000. 
A)  25-50. 
B)  100-200. 
C)  250-500. 
D)  500-750. 
E)  over 1,000.

Question 6

Another name for mesophyll cells is

Accepted Answer

A)  collenchyma. 
B)  chlorenchyma. 
C)  sclerenchyma. 
D)  cortex. 
E)  pith. 
A)  collenchyma. 
B)  chlorenchyma. 
C)  sclerenchyma. 
D)  cortex. 
E)  pith.

Question 7

Monocots generally have net-veined leaves.

Accepted Answer

A) True 
 B)False

Question 8

Betacyanins are pigments that are usually red.

Accepted Answer

A) True 
 B)False

Question 9

Xylem and phloem in a leaf are part of the

Accepted Answer

A)  veins. 
B)  epidermis. 
C)  spongy mesophyll. 
D)  palisade mesophyll. 
E)  none of these answers are correct 
A)  veins. 
B)  epidermis. 
C)  spongy mesophyll. 
D)  palisade mesophyll. 
E)  none of these answers are correct

Question 10

The arrangement of leaves on a stem is referred to as __________________.

Accepted Answer

A)  the venation 
B)  alternate 
C)  nodular 
D)  phyllotaxy 
E)  random distribution 
A)  the venation 
B)  alternate 
C)  nodular 
D)  phyllotaxy 
E)  random distribution

Question 11

The protective layer of an abscission zone serves to prevent water loss after the leaf falls off the plant.

Accepted Answer

A) True 
 B)False

Question 12

Stomata open when the water content of the guard cells increases.

Accepted Answer

A) True 
 B)False

Question 13

Because of the greater light intensity and heat absorption on the upper surface of the leaf, the upper surface has

Accepted Answer

A)  more stomates than the lower surface. 
B)  fewer stomates than the lower surface. 
C)  a thicker cuticle than the lower surface. 
D)  both [more stomates than the lower surface and a thicker cuticle than the lower surface] are correct 
E)  both [fewer stomates than the lower surface and a thicker cuticle than the lower surface] are correct 
A)  more stomates than the lower surface. 
B)  fewer stomates than the lower surface. 
C)  a thicker cuticle than the lower surface. 
D)  both [more stomates than the lower surface and a thicker cuticle than the lower surface] are correct 
E)  both [fewer stomates than the lower surface and a thicker cuticle than the lower surface] are correct

Question 14

Which is a morphological adaptation to reduce water loss from the leaf?

Accepted Answer

A)  Thin cuticle. 
B)  Densely hairy leaves. 
C)  Stomates on upper surface only. 
D)  Extra pigmentation. 
E)  Flat, broad leaves. 
A)  Thin cuticle. 
B)  Densely hairy leaves. 
C)  Stomates on upper surface only. 
D)  Extra pigmentation. 
E)  Flat, broad leaves.

Question 15

Leaf veins are located in which of the following?

Accepted Answer

A)  upper epidermis 
B)  enations 
C)  lower epidermis 
D)  endodermis 
E)  mesophyll 
A)  upper epidermis 
B)  enations 
C)  lower epidermis 
D)  endodermis 
E)  mesophyll

Question 16

The epidermis of leaves normally is coated with

Accepted Answer

A)  suberin. 
B)  lignin. 
C)  resin. 
D)  latex. 
E)  cutin. 
A)  suberin. 
B)  lignin. 
C)  resin. 
D)  latex. 
E)  cutin.

Question 17

In the abscission zone of the leaf, which of the following is closest to the stem?

Accepted Answer

A)  separation layer 
B)  gelatinous layer 
C)  protective layer 
D)  hormonal layer 
E)  None of these answers are correct. 
A)  separation layer 
B)  gelatinous layer 
C)  protective layer 
D)  hormonal layer 
E)  None of these answers are correct.

Question 18

Modified leaves are used by insectivorous plants to trap insects.One such plant that has movable modified leaves is

Accepted Answer

A)  Venus flytrap. 
B)  sun mellon. 
C)  pitcher plant. 
D)  bladderwort. 
E)  both [Venus flytrap and pitcher plant] are correct 
A)  Venus flytrap. 
B)  sun mellon. 
C)  pitcher plant. 
D)  bladderwort. 
E)  both [Venus flytrap and pitcher plant] are correct

Question 19

Which of the following is NOT a specialized leaf?

Accepted Answer

A)  Venus flytrap 
B)  Irish (white) potato 
C)  pitcher of a pitcher plant 
D)  tendril of a pea plant 
E)  sundew "trap" 
A)  Venus flytrap 
B)  Irish (white) potato 
C)  pitcher of a pitcher plant 
D)  tendril of a pea plant 
E)  sundew "trap"

Question 20

All healthy leaves of insectivorous plants actively trap insects and other small organisms.

Accepted Answer

A) True 
 B)False

Exam 7: Leaves

A leaf arrangement in which there are two leaves at a node is called _________.

Which of the following specialized leaves are found in plants living in arid environments?

Most natural ropes and twines are made from leaf fibers.

Which of the following do guard cells and palisade mesophyll cells have in common?

In most leaves the number of stomata per square centimeter of surface is

Another name for mesophyll cells is

Monocots generally have net-veined leaves.

Betacyanins are pigments that are usually red.

Xylem and phloem in a leaf are part of the

The arrangement of leaves on a stem is referred to as __________________.

The protective layer of an abscission zone serves to prevent water loss after the leaf falls off the plant.

Stomata open when the water content of the guard cells increases.

Because of the greater light intensity and heat absorption on the upper surface of the leaf, the upper surface has

Which is a morphological adaptation to reduce water loss from the leaf?

Leaf veins are located in which of the following?

The epidermis of leaves normally is coated with

In the abscission zone of the leaf, which of the following is closest to the stem?

Modified leaves are used by insectivorous plants to trap insects.One such plant that has movable modified leaves is

Which of the following is NOT a specialized leaf?

All healthy leaves of insectivorous plants actively trap insects and other small organisms.

What Is Plant Biology

The Nature of Life

Cells

Tissues

Roots and Soils

Stems

Flowers, Fruits, and Seeds

Water in Plants

Plant Metabolism

Growth

Meiosis and Alternation of Generation

Genetics

Plant Breeding and Propagation

Evolution

Plant Names and Classification

Domain Kingdombacteria, Domain King-Domarchaea, and Viruses

Kingdom Protista

Kingdom Fungi

Introduction to the Plant Kingdom: Bryophytes

The Seedless Vascular Plants: Ferns and Their Relatives

Introduction to Seed Plants: Gymnosperms

Seed Plants: Angiosperms

Flowering Plants and Civilization

Ecology

Biomes

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