How Do Plants Work?
Current populations experiencing famine are primarily the result of lack of land to grow more plants.
False.
God designed plants to maintain not only their own food needs, but provide food energy for the world of living things.
True.
What general type of plant food is produced by photosynthesis?
carbohydrates
Food production from plants is currently near its maximum potential -- worldwide.
False.
Nearly all the mass of plants comes from well fertilized soil.
False.
Without plants there would be no food for the earth.
True.
A food made up of carbon, hydrogen, and oxygen
carbohydrate
An atmospheric gas made of one carbon atom for each two oxygen atoms
carbon dioxide
Produced by organisms as opposed to nonliving chemical processes
organic
An atmospheric gas; a by-product of the light reaction of photosynthesis
oxygen
Ingenhousz found that air would be purified only when _______ and _______ worked together in the system.
sunlight, green plants
Plants harvest only a small portion of the sun's energy.
true.
De Saussure's experiments demonstrated the importance of ________ and ________ to green plants.
water, carbon dioxide
Jan Baptista's experiments showed:
- loss of soil mass < gain of plant mass - gain of plant mass related to water
Which conditions relate to the research of van Helmont
- plant mass related to H2O - conclusions partly correct
Priestly's experiments explained:
- plants are associated with O2 - animals require O2
Concerning carbohydrates:
- they all contain C, O, H, N - the ratio of H to C is fixed at 2:1
What do glucose, starch and cellulose have in common?
- they are various forms of sugars - they are all carbohydrates - they are all related to photosynthesis
The greatest number of people plants have the potential to feed, according to some agronomists is:
100 billion people
A chemical energy compound with two phosphate groups found in living cells
ADP
The first chemist to begin quantifying the process of photosynthesis was:
Nicholas de Saussure
An agricultural science that deals with crop production and improvement
agronomy
The science which develops and studies plant varieties and production is called
agronomy
The green chemical that makes green plants green
chlorophyll
The ________ requirements of all worldwide organisms are linked to the sun by photosynthesis.
food
Agronomists are scientists who work to develop crops that produce more or better foods.
true.