Question 1

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 2

Which of the following insect-trapping leaves do NOT have active traps?

Accepted Answer

A)  sundews 
B)  pitcher plants 
C)  butterworts 
D)  bladderworts 
E)  Venus flytraps 
A)  sundews 
B)  pitcher plants 
C)  butterworts 
D)  bladderworts 
E)  Venus flytraps

Question 3

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 4

Which of the following beverages is manufactured or brewed from leaves?

Accepted Answer

A)  tequila 
B)  absinthe 
C)  pulque 
D)  mate 
E)  All of these answers are correct. 
A)  tequila 
B)  absinthe 
C)  pulque 
D)  mate 
E)  All of these answers are correct.

Question 5

Which of the following drugs is NOT obtained from leaves?

Accepted Answer

A)  cocaine 
B)  penicillin 
C)  belladonna 
D)  digitalis 
E)  lobeline sulphate 
A)  cocaine 
B)  penicillin 
C)  belladonna 
D)  digitalis 
E)  lobeline sulphate

Question 6

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 7

Which of the following is a function of a stoma?

Accepted Answer

A)  diffusion of oxygen to the interior of a leaf 
B)  diffusion of carbon dioxide out of the leaf 
C)  allowing light to reach the interior of a leaf 
D)  facilitating transpiration 
E)  All of these answers are correct. 
A)  diffusion of oxygen to the interior of a leaf 
B)  diffusion of carbon dioxide out of the leaf 
C)  allowing light to reach the interior of a leaf 
D)  facilitating transpiration 
E)  All of these answers are correct.

Question 8

Which of the following is a typical characteristic of a shade leaf (as opposed to a leaf of the same plant that is fully exposed to the sun)?

Accepted Answer

A)  thicker blade 
B)  larger number of hairs 
C)  more chloroplasts 
D)  fewer, well-defined mesophyll layers 
E)  smaller in overall size 
A)  thicker blade 
B)  larger number of hairs 
C)  more chloroplasts 
D)  fewer, well-defined mesophyll layers 
E)  smaller in overall size

Question 9

Leaf venation patterns in ________ leaves are usually netlike or reticulate.

Accepted Answer

A)  dicot 
B)  monocot 
C)  grass 
D)  very small 
E)  large leaves such as banana 
A)  dicot 
B)  monocot 
C)  grass 
D)  very small 
E)  large leaves such as banana

Question 10

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 11

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 12

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 13

Which of the following leaf pigments is/are red if the cell sap is slightly acid and blue if the cell sap is slightly alkaline?

Accepted Answer

A)  carotenes 
B)  xanthophylls 
C)  chlorophyll a 
D)  anthocyanins 
E)  chlorophyll b 
A)  carotenes 
B)  xanthophylls 
C)  chlorophyll a 
D)  anthocyanins 
E)  chlorophyll b

Question 14

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 15

Insectivorous plants trap and digest insects and other small organisms to get nitrogen which is lacking in the soils of their environments.

Accepted Answer

A) True 
 B)False

Question 16

Few, if any, drugs are obtained from leaves.

Accepted Answer

A) True 
 B)False

Question 17

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 18

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

Accepted Answer

A)  more stomata than the lower surface does. 
B)  fewer stomata than the lower surface does. 
C)  a thicker cuticle than the lower surface does. 
D)  both more stomata and a thicker cuticle than the lower surface does. 
E)  both fewer stomata and a thicker cuticle than the lower surface does. 
A)  more stomata than the lower surface does. 
B)  fewer stomata than the lower surface does. 
C)  a thicker cuticle than the lower surface does. 
D)  both more stomata and a thicker cuticle than the lower surface does. 
E)  both fewer stomata and a thicker cuticle than the lower surface does.

Question 19

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

Accepted Answer

A) True 
 B)False

Question 20

In spines most of the normal leaf tissue is replaced with

Accepted Answer

A)  collenchyma. 
B)  chlorenchyma. 
C)  sclerenchyma. 
D)  ray cells. 
E)  cortex. 
A)  collenchyma. 
B)  chlorenchyma. 
C)  sclerenchyma. 
D)  ray cells. 
E)  cortex.

Exam 7: Leaves

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

Which of the following insect-trapping leaves do NOT have active traps?

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

Which of the following beverages is manufactured or brewed from leaves?

Which of the following drugs is NOT obtained from leaves?

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

Which of the following is a function of a stoma?

Which of the following is a typical characteristic of a shade leaf (as opposed to a leaf of the same plant that is fully exposed to the sun)?

Leaf venation patterns in ________ leaves are usually netlike or reticulate.

Xylem and phloem in a leaf are part of the

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

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

Which of the following leaf pigments is/are red if the cell sap is slightly acid and blue if the cell sap is slightly alkaline?

Leaf veins are located in which of the following?

Insectivorous plants trap and digest insects and other small organisms to get nitrogen which is lacking in the soils of their environments.

Few, if any, drugs are obtained from leaves.

Which of the following is NOT a specialized leaf?

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

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

In spines most of the normal leaf tissue is replaced with

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 Kingdom Bacteria, Domain Kingdom Archaea, 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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