Question 1

Most photosynthesis in a leaf takes place in the spongy mesophyll.

Accepted Answer

A) True 
 B)False  False

Question 2

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. B

Question 3

In an energy-conscious world, people may plant more trees around their homes because ________.

Accepted Answer

A)  they may use the trees for fuel 
B)  leaves of trees provide shade and reduce energy use for cooling homes 
C)  the leaves serve as insulation during winter 
D)  leaves may be composted for soil fertility 
E)  trees protect the roof from wind damage 
A)  they may use the trees for fuel 
B)  leaves of trees provide shade and reduce energy use for cooling homes 
C)  the leaves serve as insulation during winter 
D)  leaves may be composted for soil fertility 
E)  trees protect the roof from wind damage B

Question 4

If you were looking for bundle sheath cells in a leaf, you would usually find them forming a layer next to the upper epidermis.

Accepted Answer

A) True 
 B)False

Question 5

A conspicuous organelle at the light microscope level in cells of the palisade mesophyll would be

Accepted Answer

A)  chloroplasts. 
B)  nucleoli. 
C)  mitochondria. 
D)  vacuoles. 
E)  ribosomes. 
A)  chloroplasts. 
B)  nucleoli. 
C)  mitochondria. 
D)  vacuoles. 
E)  ribosomes.

Question 6

Which of the following is known to be modified as a tendril?

Accepted Answer

A)  rachis 
B)  leaflet 
C)  stipule 
D)  petiole 
E)  All of these answers are correct. 
A)  rachis 
B)  leaflet 
C)  stipule 
D)  petiole 
E)  All of these answers are correct.

Question 7

The jacket of cells surrounding a leaf vein is usually termed a/an

Accepted Answer

A)  bundle sheath. 
B)  protective parenchyma layer. 
C)  fiber-tracheid layer. 
D)  ray. 
E)  myelin sheath. 
A)  bundle sheath. 
B)  protective parenchyma layer. 
C)  fiber-tracheid layer. 
D)  ray. 
E)  myelin sheath.

Question 8

Plants whose leaves fall off at the end of the growing season are

Accepted Answer

A)  partially evergreen. 
B)  conifers. 
C)  biennials. 
D)  deciduous. 
E)  dying. 
A)  partially evergreen. 
B)  conifers. 
C)  biennials. 
D)  deciduous. 
E)  dying.

Question 9

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

Accepted Answer

A) True 
 B)False

Question 10

Sugars produced in photosynthesis are "loaded" into the ________ of the leaf for transport throughout the plant.

Accepted Answer

A)  mesophyll 
B)  phloem 
C)  xylem 
D)  bundle fibers 
E)  cuticle 
A)  mesophyll 
B)  phloem 
C)  xylem 
D)  bundle fibers 
E)  cuticle

Question 11

A cluster of leaflets attached to the end of the petiole would be characteristic of a

Accepted Answer

A)  pinnately compound leaf. 
B)  palmately compound leaf. 
C)  twice pinnately compound leaf. 
D)  whorled leaf. 
E)  simple leaf. 
A)  pinnately compound leaf. 
B)  palmately compound leaf. 
C)  twice pinnately compound leaf. 
D)  whorled leaf. 
E)  simple leaf.

Question 12

Most natural ropes and twines are made from leaf fibers.

Accepted Answer

A) True 
 B)False

Question 13

Which of the following may cause pectins in the middle lamella of cells of the separation layer to break down in the fall?

Accepted Answer

A)  decreasing daylengths 
B)  lower temperatures 
C)  decreasing light intensities 
D)  lack of adequate water 
E)  All of these answers are correct. 
A)  decreasing daylengths 
B)  lower temperatures 
C)  decreasing light intensities 
D)  lack of adequate water 
E)  All of these answers are correct.

Question 14

Pinnately compound leaves have leaflets in pairs along a rachis.

Accepted Answer

A) True 
 B)False

Question 15

Stomata are part of this tissue.

Accepted Answer

A)  spongy mesophyll 
B)  palisade mesophyll 
C)  vascular bundles 
D)  epidermis 
E)  phloem parenchyma 
A)  spongy mesophyll 
B)  palisade mesophyll 
C)  vascular bundles 
D)  epidermis 
E)  phloem parenchyma

Question 16

In a leaf such as a sunflower, the average number of stomates on the lower surface is approximately ________.

Accepted Answer

A)  2,000,000 
B)  18,000 
C)  5,000. 
D)  250. 
E)  25. 
A)  2,000,000 
B)  18,000 
C)  5,000. 
D)  250. 
E)  25.

Question 17

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 18

Flower pot leaves provide ________. In turn, adventitious roots harvest minerals from the resulting accumulation of nutrient-rich material.

Accepted Answer

A)  a haven for ant nests 
B)  succulent leaves with water storage 
C)  a trap for dust and rain 
D)  storage of excess starch 
E)  a place for seeds to germinate 
A)  a haven for ant nests 
B)  succulent leaves with water storage 
C)  a trap for dust and rain 
D)  storage of excess starch 
E)  a place for seeds to germinate

Question 19

All leaves originate as

Accepted Answer

A)  bud scales. 
B)  primordia. 
C)  axillary buds. 
D)  terminal buds. 
E)  stipules. 
A)  bud scales. 
B)  primordia. 
C)  axillary buds. 
D)  terminal buds. 
E)  stipules.

Question 20

Which statement about venation is INCORRECT?

Accepted Answer

A)  Venation refers to arrangement of the veins within a leaf. 
B)  Venation patterns include pinnate, palmate and dichotomous. 
C)  Some flowering plants have leaves that lack venation even though the stems and roots have vascular bundles. 
D)  In general, monocots exhibit parallel venation. 
E)  Venation is important for delivering water to leaf cells and taking sugars to the stem. 
A)  Venation refers to arrangement of the veins within a leaf. 
B)  Venation patterns include pinnate, palmate and dichotomous. 
C)  Some flowering plants have leaves that lack venation even though the stems and roots have vascular bundles. 
D)  In general, monocots exhibit parallel venation. 
E)  Venation is important for delivering water to leaf cells and taking sugars to the stem.

Exam 7: Leaves

Most photosynthesis in a leaf takes place in the spongy mesophyll.

Another name for mesophyll cells is

In an energy-conscious world, people may plant more trees around their homes because ________.

If you were looking for bundle sheath cells in a leaf, you would usually find them forming a layer next to the upper epidermis.

A conspicuous organelle at the light microscope level in cells of the palisade mesophyll would be

Which of the following is known to be modified as a tendril?

The jacket of cells surrounding a leaf vein is usually termed a/an

Plants whose leaves fall off at the end of the growing season are

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

Sugars produced in photosynthesis are "loaded" into the ________ of the leaf for transport throughout the plant.

A cluster of leaflets attached to the end of the petiole would be characteristic of a

Most natural ropes and twines are made from leaf fibers.

Which of the following may cause pectins in the middle lamella of cells of the separation layer to break down in the fall?

Pinnately compound leaves have leaflets in pairs along a rachis.

Stomata are part of this tissue.

In a leaf such as a sunflower, the average number of stomates on the lower surface is approximately ________.

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

Flower pot leaves provide ________. In turn, adventitious roots harvest minerals from the resulting accumulation of nutrient-rich material.

All leaves originate as

Which statement about venation is INCORRECT?

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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