What is transpiration?

The loss of water vapor from the leaves and stems of plants

Plants which live in permanently dry conditions

How is water carried by the transpiration stream?

Cohesion, adhesion and transpiration pull

What is the epidermis?

The surface layers of a plant and the cuticle

What are some adaptations of flowering plants which live in saline soils?

Water storage tissue, thick waxy cuticle, reduced leaf area

In which direction does the phloem transport materials?

Up and down the plant all the time

Which technical developments have aided in the understanding of phloem transport?

Light microscopes and x-ray diffraction, Radioactive labeling and light microscopes

What does this diagram show?

Use of a proton gradient to co-transport sucrose into phloem

Which of these is true of sieve tube cells

They have holes between them called sieve tube plates

What is responsible for the flow of sugars down phloem?

Water entering phloem from xylem and a pressure gradient

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IB Biology - Topic 9.1-9.2 Plant Biology

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Answers

1
The transport of organic solutes in a plant is called
Transcription
Translation
Translocation
Transpiration
2
What is transpiration?
The loss of water from only the stems of plants
The loss of water vapor from an animal
The loss of water vapor from the leaves and stems of plants
The loss of water vapor from only the leaves of plants
3
What are Xerophytes?
Plants which can be found anywhere
Plants which grow only in or on water
Plants needing only a moderate amount of water
Plants which live in permanently dry conditions
4
How is water carried by the transpiration stream?
Active transport, adhesion and transpiration pull
Transpiration pull and cohesion only
Cohesion, adhesion and transpiration pull
Adhesion, cohesion and active transport
5
What is the epidermis?
The surface layers of a plant and the cuticle
A type of lateral meristem
The root system of a plant
A longitudinal set of tubes
6
What is co-transported into the companion cells (then sieve tubes) from surrounding tissues?
Sodium and Glucose
Hydrogen and Glucose
Hydrogen only
Protons and Sucrose
7
What are some adaptations of flowering plants which live in saline soils?
Water storage tissue, thick waxy cuticle, reduced leaf area
Long tap roots, succulent leaves, a large leaf surface area
Water storage tissue, thick waxy cuticle, many stomata
Ability to remove salt, long tap roots, many stomata
8
Where does water enter the plant?
root
leaves
petals
stem
9
In which direction does the phloem transport materials?
Up and down the plant all the time
Down the plant
Up the plant only during the summer
Up the plant
10
What is an adaptation in Xerophytes?
Thin cuticle
Large air spaces
Hairs on the leaves
Short roots
11
Which technical developments have aided in the understanding of phloem transport?
Electron microscopes and x-ray diffraction
Light microscopes and x-ray diffraction
Radioactive labeling and light microscopes
Radioactive labeling and electron microscopes
12
What does this diagram show?
Use of a proton gradient to co-transport sucrose into phloem
Use of facilitated diffusion of water
Use of a proton gradient to transport sucrose out of phloem
Passive transport of sucrose
13
Which of these is true of sieve tube cells
They have holes between them called sieve tube plates
They are non-living
They contain a nucleus
They actively transport hydrogen ions
14
What is responsible for the flow of sugars down phloem?
Movement of salts
Water entering phloem from xylem and a pressure gradient
Active transport of sucrose
Facilitated diffusion of hydrogen atoms

IB Biology - Topic 9.1-9.2 Plant Biology Flashcards | StudBud