Sustainability is the use of resources in a way that meets the needs of the current generation without depleting them for future generations.

Turgidity is the state of a plant cell when it is swollen with water, resulting in pressure against the cell wall , helping to maintain the cell's shape.

The tensile strength of a fibre is the maximum load it can carry before breaking.

What is a renewable resource ?

A renewable resource is a resource that can be replenished naturally and used without the resource running out.

True or False? Water is required for photosynthesis and helps regulate enzyme activity in plants.

True. Water is needed for photosynthesis and also helps regulate temperature so enzymes work at their optimum rate.

What apparatus is needed to determine the tensile strength of plant fibres?

To determine the tensile strength of plant fibres, you need a clamp stand , clamp , and weights .

True or False? Fossil fuels are considered a renewable resource.

False. Fossil fuels are non-renewable because they take millions of years to form and could run out if used too quickly.

Plant roots absorb and through root hairs, which then move up the stem in xylem vessels.

Plant roots absorb water and inorganic ions through root hairs, which then move up the stem in xylem vessels.

The tensile strength of a fibre is measured by attaching it to a clamp stand and adding until it breaks.

The tensile strength of a fibre is measured by attaching it to a clamp stand and adding weights until it breaks.

Sustainable practices are those that minimise done to the environment to ensure resources are available for the .

Sustainable practices are those that minimise damage done to the environment to ensure resources are available for the next generation .

Chlorophyll is a green pigment found in plant cells that is essential for photosynthesis .

True or False? To increase reliability, you should repeat the tensile strength experiment with more samples of the same plant fibre.

True. Repeating the experiment with more samples increases the reliability of your results.

Give an example of a sustainable practice .

Replanting trees after logging is an example of a sustainable practice .

A deficiency in ions causes yellow leaves, while a deficiency in ions causes stunted growth in plants.

A deficiency in magnesium ions causes yellow leaves, while a deficiency in nitrate ions causes stunted growth in plants.

Mean tensile strength

The mean tensile strength is the average value of tensile strength calculated from multiple samples of the same fibre.

Why is using plant fibres to make products more sustainable than using oil-based plastics?

Using plant fibres is more sustainable because less fossil fuels are used, plants can be replanted , and plant fibres are biodegradable .

Which ion is needed by plants to synthesise DNA, proteins, and chlorophyll?

Plants need nitrate ions to synthesise DNA, proteins, and chlorophyll.

When testing plant fibres, all fibres should be of the and all other should be kept constant.

When testing plant fibres, all fibres should be of the same length and all other variables should be kept constant.

Plant fibres are , unlike most oil-based plastics, which means products made from these fibres can be broken down by .

Plant fibres are biodegradable , unlike most oil-based plastics, which means products made from these fibres can be broken down by microbes .

Xylem vessels are tubes in plants that transport water and minerals from the roots to the rest of the plant.

What safety precautions should be taken when investigating the tensile strength of plant fibres?

Eye protection should be worn in case the fibre snaps, and care should be taken to keep feet clear of falling weights .

A bioplastic is a type of plastic made from biological polymers such as starch and cellulose, instead of oil-based materials.

What is the main role of calcium ions in plants?

Calcium ions are needed for forming cell wall components and proper growth in plants.

As well as length, the of each fibre must be kept the same to ensure a fair test.

As well as length, the diameter of each fibre must be kept the same to ensure a fair test.

What are two benefits of using bioplastics over traditional plastics?

Bioplastics are sustainable as they are made from renewable plant materials, and they are biodegradable so they can be broken down by microorganisms.

Starch from plants can be used to make and , both of which are more sustainable than oil-based equivalents.

Starch from plants can be used to make bioplastics and bioethanol , both of which are more sustainable than oil-based equivalents.

International A Level (IAL)BiologyEdexcelFlashcards4. Plant Structure & Function, Biodiversity & ConservationPlants & Conservation

Plants & Conservation (Edexcel International A Level (IAL) Biology): Flashcards

Exam code: YBI11

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Sustainability

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Cards in this collection (26)

Sustainability
Sustainability is the use of resources in a way that meets the needs of the current generation without depleting them for future generations.
Turgidity
Turgidity is the state of a plant cell when it is swollen with water, resulting in pressure against the cell wall, helping to maintain the cell's shape.
Tensile strength
The tensile strength of a fibre is the maximum load it can carry before breaking.
What is a renewable resource?
A renewable resource is a resource that can be replenished naturally and used without the resource running out.
True or False?
Water is required for photosynthesis and helps regulate enzyme activity in plants.
True.
Water is needed for photosynthesis and also helps regulate temperature so enzymes work at their optimum rate.
What apparatus is needed to determine the tensile strength of plant fibres?
To determine the tensile strength of plant fibres, you need a clamp stand, clamp, and weights.
True or False?
Fossil fuels are considered a renewable resource.
False.
Fossil fuels are non-renewable because they take millions of years to form and could run out if used too quickly.
Plant roots absorb and through root hairs, which then move up the stem in xylem vessels.
Plant roots absorb water and inorganic ions through root hairs, which then move up the stem in xylem vessels.
The tensile strength of a fibre is measured by attaching it to a clamp stand and adding until it breaks.
The tensile strength of a fibre is measured by attaching it to a clamp stand and adding weights until it breaks.
Sustainable practices are those that minimise done to the environment to ensure resources are available for the .
Sustainable practices are those that minimise damage done to the environment to ensure resources are available for the next generation.
Chlorophyll
Chlorophyll is a green pigment found in plant cells that is essential for photosynthesis.
True or False?
To increase reliability, you should repeat the tensile strength experiment with more samples of the same plant fibre.
True.
Repeating the experiment with more samples increases the reliability of your results.
Give an example of a sustainable practice.
Replanting trees after logging is an example of a sustainable practice.
A deficiency in ions causes yellow leaves, while a deficiency in ions causes stunted growth in plants.
A deficiency in magnesium ions causes yellow leaves, while a deficiency in nitrate ions causes stunted growth in plants.
Mean tensile strength
The mean tensile strength is the average value of tensile strength calculated from multiple samples of the same fibre.
Why is using plant fibres to make products more sustainable than using oil-based plastics?
Using plant fibres is more sustainable because less fossil fuels are used, plants can be replanted, and plant fibres are biodegradable.
Which ion is needed by plants to synthesise DNA, proteins, and chlorophyll?
Plants need nitrate ions to synthesise DNA, proteins, and chlorophyll.
When testing plant fibres, all fibres should be of the and all other should be kept constant.
When testing plant fibres, all fibres should be of the same length and all other variables should be kept constant.
Plant fibres are , unlike most oil-based plastics, which means products made from these fibres can be broken down by .
Plant fibres are biodegradable, unlike most oil-based plastics, which means products made from these fibres can be broken down by microbes.
Xylem vessels
Xylem vessels are tubes in plants that transport water and minerals from the roots to the rest of the plant.
What safety precautions should be taken when investigating the tensile strength of plant fibres?
Eye protection should be worn in case the fibre snaps, and care should be taken to keep feet clear of falling weights.
Bioplastic
A bioplastic is a type of plastic made from biological polymers such as starch and cellulose, instead of oil-based materials.
What is the main role of calcium ions in plants?
Calcium ions are needed for forming cell wall components and proper growth in plants.
As well as length, the of each fibre must be kept the same to ensure a fair test.
As well as length, the diameter of each fibre must be kept the same to ensure a fair test.
What are two benefits of using bioplastics over traditional plastics?
Bioplastics are sustainable as they are made from renewable plant materials, and they are biodegradable so they can be broken down by microorganisms.
Starch from plants can be used to make and , both of which are more sustainable than oil-based equivalents.
Starch from plants can be used to make bioplastics and bioethanol, both of which are more sustainable than oil-based equivalents.

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