Which properties of water allow transpiration pull to move water by mass flow up the xylem?

Adhesion - attraction between water molecules and xylem wall, Cohesion - attraction between water molecules

Which statement about translocation is NOT true?

It moves sap from sink to source

Which of the following is a correct adaptation of xylem vessels?

Extra cellulose for strength, Lignin for waterproofing

Which is NOT an adaptation of a root hair cell?

Made from non-living cells so it is hollow for transport

Which is NOT part of the definition for transpiration?

By osmosis down a water potential gradient

Give the correct pathway of water.

Root hair cell > cortex cells > xylem > mesophyll cells

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IGCSE Plant Transport

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Questions 12

Answers

1
Identify A.
Cambium
Xylem
Phloem
Vascular bundle
2
Which plant tissue is made from living cells, with holes in the end walls called sieve plates?
Cortex
Epidermis
Phloem
Xylem
3
Which of the following environmental changes would DECREASE rate of transpiration?
Increase in light intensity
Increase in temperature
Increase in humidity
Increase in wind speed
4
Which properties of water allow transpiration pull to move water by mass flow up the xylem?
Adhesion - attraction between water molecules
Adhesion - attraction between water molecules and xylem wall
Cohesion - attraction between water molecules
Cohesion - attraction between water molecules and xylem wall
5
Which part of this section will stain if the plant is placed in coloured water?
D
B
A
C
6
What substances are transported in the phloem?
Minerals, amino acids
Sucrose, amino acids
Water, minerals
Minerals, sucrose
7
Which statement about translocation is NOT true?
It carries sucrose and amino acids through the phloem
It moves sap from sink to source
It requires energy from respiration
Aphids are small insects that can be used to study sap
8
From which part of a plant is this section taken?
Stem
Flower
Leaf
Root
9
Which of the following is a correct adaptation of xylem vessels?
Extra cellulose for strength
Lignin for strength
Extra cellulose for waterproofing
Lignin for waterproofing
10
Which is NOT an adaptation of a root hair cell?
Long extension to increase surface area for absorption
Made from non-living cells so it is hollow for transport
Mitochondria for respiration to provide energy
Proteins in membrane for active transport of minerals
11
Which is NOT part of the definition for transpiration?
Through stomata
By osmosis down a water potential gradient
Diffusion of water vapour out of leaf
Evaporation of water from surface of mesophyll cells
12
Give the correct pathway of water.
Root hair cell > cortex cells > xylem > mesophyll cells
Root hair cell > cortex cells > mesophyll cells > xylem
Root hair cell > mesophyll cells > xylem > cortex cells
Root hair cell > xylem > cortex cells > mesophyll cells

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