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Name ___________________________________________________________________
Date ____________
Class ______________
Content Mastery
CHAPTER
26
FLOWERING PLANTS
Use the diagram of the tree trunk to answer the questions.
Secondary
phloem
Primary
phloem
Cork
Secondary
xylem
Bark
Cambium
Primary
xylem
Annual growth
layers
xylem
4. What tissue makes up the annual growth rings in a tree? _________________________________
5. Vascular cambium produces new xylem and phloem. The newest growth is closest to the
primary phloem
cambium. Which is older, primary or secondary phloem? ________________________________
6. The inner part of bark is made of phloem. The tough outer layer of bark is made of
cork
______________________
.
Use the diagram of the leaf to answer the questions.
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Leaf Cross Section
Cuticle
Upper epidermis
Palasade mesophyll–
where photosynthesis
occurs
Vascular bundle
Xylem
Phloem
Lower epidermis
Stomata
Spongy
mesophyll
Guard cells
false
7. True or false? Only a stem has xylem and phloem. ______________________
8. As well as being coated with a waxy cuticle, leaves prevent water loss by controlling the size of
guard cells
the stomata. This is done by surrounding cells called ______________________
.
palasade mesophyll
9. In which leaf cells does most photosynthesis take place? _________________________________
BIOLOGY: The Dynamics of Life CHAPTER 26
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