Xylem and Phloem (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
15 questions from this quiz
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Practise the questions
15 questions from this quiz
What type of tissue is xylem?
What type of tissue is xylem?
Dead tissue
What are the two types of xylem?
What are the two types of xylem?
Vessels and tracheids
What does xylem transport from the roots to the leaves?
What does xylem transport from the roots to the leaves?
Water and minerals
How do vessels compare to tracheids in width?
How do vessels compare to tracheids in width?
Vessels are wider than tracheids
What substance strengthens the walls of xylem?
What substance strengthens the walls of xylem?
Lignin
Which xylem type is more efficient at transporting water?
Which xylem type is more efficient at transporting water?
Vessels
What is the evolutionary status of tracheids compared to vessels?
What is the evolutionary status of tracheids compared to vessels?
More primitive
What two components make up phloem?
What two components make up phloem?
Sieve tubes and companion cells
What are the pores in the end walls of sieve tube cells called?
What are the pores in the end walls of sieve tube cells called?
Sieve plates
Do sieve tube cells contain a nucleus?
Do sieve tube cells contain a nucleus?
No, they do not
What is the role of companion cells in phloem?
What is the role of companion cells in phloem?
Control sieve tube elements
What does phloem transport?
What does phloem transport?
Food from photosynthesis
In which direction can phloem flow?
In which direction can phloem flow?
Upwards or downwards
What substance makes up the walls of phloem?
What substance makes up the walls of phloem?
Cellulose
Why is phloem considered living tissue?
Why is phloem considered living tissue?
Because of the companion cells