Plant Transport Systems

Biology

An overview of the structure and function of xylem and phloem in plant transport systems, including water absorption and transpiration.

Botany Plant Science Biology

15 Questions Easy Ages 10+ Jul 6, 2026

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About this Study Set

This study set covers Biology through 15 practice questions. An overview of the structure and function of xylem and phloem in plant transport systems, including water absorption and transpiration. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 15 questions from the Plant Transport Systems study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the primary function of the phloem?

A Transporting water
B Transporting food
C Supporting the plant
D Absorbing minerals

2 In which directions can transport occur in the phloem?

A Only upward
B Only downward
C Upward and downward
D Horizontal only

3 What are the cell walls of the phloem described as?

A Thick-walled
B Thin-walled
C Hardened
D Non-existent

4 What is the main function of root hairs?

A Producing sugar
B Absorbing water and minerals
C Storing carbon dioxide
D Transporting food

5 How do root hairs benefit a plant?

A They increase absorption area
B They produce oxygen
C They prevent transpiration
D They provide structural support

6 What substances are moved by the plant transport system?

A Only water
B Only sugar
C Water, minerals, sugars, and nutrients
D Only oxygen

7 What is transpiration?

A The intake of sunlight
B The loss of water vapor from leaves
C The production of sugar
D The growth of roots

8 What is the 'transpiration pull'?

A A force pulling water downward
B A force moving water upward through xylem
C A force pushing sugar to roots
D A force absorbing minerals

9 What does the xylem transport?

A Food
B Water and dissolved minerals
C Oxygen
D Sugar

10 Which xylem element is responsible for support?

A Tracheids
B Vessel elements
C Xylem fibers
D Xylem parenchyma

11 What is the function of xylem parenchyma?

A Water transport
B Storage
C Support
D Water conduction

12 What do companion cells do in the phloem?

A Assist sieve tubes
B Store water
C Provide support
D Absorb minerals

13 Which phloem element is responsible for food transport?

A Companion cells
B Sieve tubes
C Phloem fibers
D Phloem parenchyma

14 What is the function of phloem parenchyma?

A Food transport
B Food storage
C Support
D Assisting sieve tubes

15 What is the function of phloem fibers?

A Food storage
B Food transport
C Support
D Assisting sieve tubes

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