Through this process, plants can convert water and carbon dioxide into sugars(food) and oxygen.
What is photosynthesis?
100
This is the starting point for the water cycle.
What is the water cycle has no starting point?
100
Condensation is when...
What is water vapor cools and turns into clouds?
100
Earth has more than 80,000 of this type of plant.
What is edible?
100
Some examples of non-vascular plants are...
What are mosses, liverworts, and hornworts?
200
Plants don't need this chemical, so they release it into the air to our benefit.
What is oxygen?
200
The water cycle describes this.
What is the existence and movement of water on, in and above earth?
200
Transpiration from plants is really this.
What is water vapor given off by plants?
200
This percentage of foods humans eat come from just 30 plants.
What is 90%?
200
Sperm cells in mosses are able to move through the moisture to find and fertilize egg cells as a result of this.
What are damp conditions around mosses?
300
A plant's release of oxygen is called this.
What is respiration?
300
Earth's water is always...
What is in movement?
300
After water vapor cools and condenses to form clouds, precipitation falls back to the ground in these forms.
What is rain, sleet, hail, snow, etc?
300
Seventy thousand plant species are used for this.
What is medicine?
300
On vascular plants, each of these perform a different function and is necessary for the plant to live.
What are roots, stems and leaves?
400
This is the process where plants give off water vapor into the air around them.
What is transpiration?
400
Earth's water changes these forms at different points of the water cycle.
What is from liquid to vapor and back again?
400
Most precipitation falls back into the oceans or onto land, where, due to gravity, the precipitation flows over the ground as this.
What is surface runoff?
400
Half of the drugs prescribed in the U.S. have plant based origins, many coming out of the rain forest, yet only this percent of rain forest plants have been studied for medicinal potential.
What is one percent?
400
Xylem transports water and dissolved minerals to these plant parts.
What is from roots to leaves?
500
Without plants, animals would be in big trouble for this reason.
What is plants are a major source of oxygen and water vapor in our air?
500
This happens during the evaporation stage of the water cycle.
What is water is heated by the sun and turns into water vapor?
500
This activity kept and still keeps introducing water into the atmosphere, thus increasing the surface-water and groundwater volume of the Earth.
What is volcanic activity?
500
True or False - More than half of plant species are native to just one country.
What is true?
500
Phloem transports food (sugar) made in leaves to this plant part.