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Edexcel IGCSE Biology - Plant Transport Flashcards | StudBud

Explore/Edexcel IGCSE Biology - Plant Transport

Edexcel IGCSE Biology - Plant Transport

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Plant Transport including xylem and phloem.

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Questions 10

Answers

1
How do ringing experiments provide evidence for sucrose transport in phloem?
Above ring swelled as sugar couldn't move to growing tissues
The ring removed contained xylem so water couldn't be moved
The section below the ring swelled as no movement to leaves
Ring removed contained sucrose with 14C isotope
2
Where does translocation move materials from and to? (with examples)
From sink (root cell) to source (leaf cell)
From source (root cell) to sink (leaf cell)
From source (leaf cell) to sink (root cell)
From sink (leaf cell) to source (root cell)
3
What describes the movement of water up xylem which results in a transpiration stream?
Translocation
Root Pressure
Cohesion-Tension Theory
Capillarity
4
Which of these factors decreases transpiration rate as it increases?
Air Speed
Light Intensity
Humidity
Temperature
5
What is the name of the theory that translocation works by?
Bulk transport
Passive transport
Counter current flow
Mass flow
6
The companion cells contain many..........
RER
Vacuoles
Mitochondria
Chloroplasts
7
How are most mineral ions absorbed into the root hair cell from the soil?
Active Transport
Osmosis
Facilitated Diffusion
Simple Diffusion
8
Which pathway does the Casparian Strip prevent the water travelling in?
Endodermal
Symplast
Vacuolar
Apoplast
9
Which of these cell types make up phloem?
Tracheids and Vessels
Companion and Sieve Tube
Root Hair and Companion
Epithelial and Vessels
10
Which of these factors is not an adaptation of Xerophytes?
Thick Cuticle
Rolled Leaves
Stomata on upper surface of leaves
Interlocking Hairs