Plants for Food and Fibre How do we produce useful plant products and how do we apply these techniques in a sustainable way?

Plants and their Uses Brainstorm what you know about plants Create a title page for this unit Bill Nye Plants video… YDNHTWTD

Anticipation Guide This is an Anticipation Guide that is used to help you read information from a textbook and understand its meaning. You will be directed to read the following True/False questions. You will write down a “guess” in the Before space. You may not know why your answer is true and false but be ready to defend your reason. ALWAYS HAVE A REASON! This is hard. But we will practice coming up with reasons for your answers. It is a skill to be able to apply what you know to what you don’t know. After you have made your guesses, then you will read that section of the textbook. As you read, you will fill in the After space answer. Again, you should write down your reason for your answer. These questions will serve as your notes for this information. YDNHTWTD

p92 Plants are only used to eat. False – clothing, paper, building materials, medicine, oxygen, filters to clean the environment

p92 Fibre from plants is only used to make clothing and paper. False – building materials and medicine

p92 Plant fibre comes from the stem, leaves seeds, or roots of a plant. True – except sometimes the flowers or seeds can be used for fibre as well.

p92 Plants produce carbon dioxide needed for breathing. False – plants produce oxygen needed for breathing and use carbon dioxide to make glucose

p92 Cars and factories add carbon dioxide to the air. True – so do humans and animals

p92 It takes three large trees to absorb the excess carbon dioxide put into the atmosphere when a car is driven for one hour. False – it takes four trees

p92 Plants are the basis of food webs, help clean and filter water, prevent flooding and help keep soil in place. True

p92 75% of the world’s food supply is based on seven major crops. True – wheat, rice, barley, maize (corn), potatoes, cassava and sorghum

7 major food crops For the next slides, write down your guess as to which type of crop it is.. Wheat, rice, maize (corn), potatoes, barley, cassava and sorghum YDNHTWTD

Wheat, rice, maize (corn), potatoes, barley, cassava or sorghum YDNHTWTD

Rice YDNHTWTD

Wheat, rice, maize (corn), potatoes, barley, cassava or sorghum YDNHTWTD

Wheat YDNHTWTD

Wheat, rice, maize (corn), potatoes, barley, cassava or sorghum YDNHTWTD

Corn YDNHTWTD

Wheat, rice, maize (corn), potatoes, barley, cassava or sorghum YDNHTWTD

Potatoes YDNHTWTD

Wheat, rice, maize (corn), potatoes, barley, cassava or sorghum YDNHTWTD

Barley

Wheat, rice, maize (corn), potatoes, barley, cassava or sorghum YDNHTWTD

Cassava YDNHTWTD

Wheat, rice, maize (corn), potatoes, barley, cassava or sorghum YDNHTWTD

Sorghum YDNHTWTD

p94 Most of our clothing comes from synthetic material such as cotton, hemp or flax. YDNHTWTD

Plants for Fibre First of all, cotton, hemp and flax are natural NOT synthetic fibres. So this statement is false for that. CottonHemp Flax

Plants for Fibre However, most of our clothing DOES come from synthetic material like polyester or nylon so it is true for that.

p94 Cotton is the world’s most important non-edible plant because it absorbs moisture and allows it to evaporate easily. True YDNHTWTD

Cotton The flowers of the cotton plant bloom in the afternoon and after only a few weeks, you can see cotton inside! YDNHTWTD

Cotton False – it flowers in the morning and it takes four months to see the cotton inside

p95 Hemp is the oldest fibre plant in the world and is used to make jeans. YDNHTWTD

Hemp Trulse – Hemp is the oldest fibre and it used to be used to make blue jeans but it isn’t today.

Hemp Hemp is better for the environment. YDNHTWTD

Hemp True – if we are comparing it to other sources of fibre

Hemp True – if we are comparing it to other sources of fibre Ready to harvest in one year

Hemp True – if we are comparing it to other sources of fibre Ready to harvest in one year Hemp paper can be recycled more times,

Hemp True – if we are comparing it to other sources of fibre Ready to harvest in one year Hemp paper can be recycled more times, Doesn’t need as much pesticides for weeds or insects

Flax Flax can be eaten, used for cloth, and also used in paints and disposable diapers. YDNHTWTD

Flax True – except for the diaper part – that comes from wood pulp. Some biodegradable diapers are made from sphagnum moss. Reusable diapers are made from cotton.

p Plants for Medicine Birch resin or sap is used as a natural tooth cleaner for nearly years! False – 9000 years YDNHTWTD

p Plants for Medicine Some pain medications are found naturally in plants and then concentrated in a lab. YDNHTWTD

p Plants for Medicine True – some pain medication cannot be made artificially like morphine found in opium poppy seeds

p Plants for Medicine Malaria parasites have developed a resistance to natural quinine. YDNHTWTD

p Plants for Medicine False – the parasites have developed resistance to the artificial quinine but not the natural quinine from cinchona trees

p Plants for Transportation and Construction Rubber only comes from latex tapped from rubber trees. YDNHTWTD

p Plants for Transportation and Construction Trulse – synthetic rubber can be made from coal and oil by-products, but natural rubber is still an important part

p Plants for Transportation and Construction 90% of all houses are made from wood. YDNHTWTD

p Plants for Transportation and Construction True – mostly from softwood trees such as conifers ie. fir, pine

p Plants for Transportation and Construction Plants are the major source of fuel for warmth and our engines in cars for example. YDNHTWTD

p Plants for Transportation and Construction True – wood, as well as fossil fuels which used to be plants millions of years ago -Producing fuel from plants is economical but not very energy efficient. -A large amount of energy is required to grow and harvest the crop

Plants for Food and Fibre How do we produce useful plant products and how do we apply these techniques in a sustainable way?

p Plants for Medicine Matching Exit slip… Add a few multiple choice…. YDNHTWTD

Growing Conditions for Healthy Plants