Xylem and Phloem (Leaving Cert Biology): Flashcards
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Two types of xylem
Two types of xylem
Vessels and tracheids
Is xylem living or dead tissue?
Is xylem living or dead tissue?
Dead tissue
Substances transported by xylem
Substances transported by xylem
Water and minerals
Second function of xylem
Second function of xylem
Mechanical support
Wider xylem type
Wider xylem type
Vessels
More efficient water transporter in xylem
More efficient water transporter in xylem
Vessels
Material strengthening xylem walls
Material strengthening xylem walls
Lignin
Shape of tracheid cells
Shape of tracheid cells
Long and tapered
Two components of phloem
Two components of phloem
Sieve tubes and companion cells
What are pores in sieve tube end walls called?
What are pores in sieve tube end walls called?
Sieve plates
Do sieve tube cells contain a nucleus?
Do sieve tube cells contain a nucleus?
No (absent)
Why is phloem living tissue?
Why is phloem living tissue?
Has companion cells
What does phloem transport?
What does phloem transport?
Food from photosynthesis
Xylem vs phloem: tissue type
Xylem vs phloem: tissue type
Xylem: dead, Phloem: living
Flow direction: xylem vs phloem
Flow direction: xylem vs phloem
Xylem: up, Phloem: up or down