People and Plants
the tissue of plants from the stem, leaves, seeds, or roots.
Fibre
the source of morphine, the most powerful natural pain medication of all.
Opium poppies
is one of the most important plant products that people use.
Rubber
The sugar in some plants can be turned into a type of liquid fuel called
ethanol.
Plants growing in _______ are well suited to their environment and the amount of light, heat, and water they naturally receive.
natural conditions
natural fibre that has been grown and used by humans for centuries.
Cotton
is found in the milky f luid of the poppy’s seed pod and also in the stems and leaves
Morphine
liquid rubber
latex)
another type of liquid fuel that is made from wood.
Methanol
Name two ways in which plants are used in transportation.
1. Rubber 2. Biofuels
the oldest cultivated fibre plant in the world.
Hemp
also found in the poppy. It is used in cough medicines and for the relief of other cold symptoms.
Codeine
This tree is currently the only source of natural rubber
Brazilian rubber tree
Methanol is also called
wood alcohol.
What advantages does hemp have over other fibre plants such as wood and cotton?
Hemp grows quickly, Hemp fibers are stronger, hemp can be used to make high-quality paper, hemp is naturally biodegradable.
a food and fibre crop that is grown in the northern, cooler regions of the world.
Flax
comes from cinchona trees
Quinine
Indigenous people in Canada made canoes from
trees
Producing fuel from plants is economical but not very
energy efficient.
This comes from a coniferous tree
Softwood
not eaten by most insect pests, so chemicals to control weeds and insects are not needed.
Hemp
Until quinine became widely available, _____ killed approximately 2 million people each year.
malaria
are used to oil machinery parts to ensure that they work properly.
Lubricants
provide an alternative fuel source in our world where oil and gasoline from traditional sources are limited.
liquid fuels
This comes from broad-leaved, or deciduous, trees.
hardwood