Photosynthesis 1
What is the chemical formula for Oxygen and Water?
O2 and H2O
Most of the oxygen gas present in the atmosphere is produced as a result of
A. photosynthesis
B. cellular respiration
C. dehydration synthesis
D. decomposition
Photosynthesis
Roots have these two main jobs.
absorb vitamin, minerals and an ancher
Where does photosynthesis take place inside the leaves?
What is chloroplast?
What is the chemical formula for Carbon Dioxide?
What is CO2?
Carbon dioxide makes up less than 1 percent of Earth’s atmosphere, and oxygen makes up about 20 percent. These percentages are maintained most directly by
A. respiration and photosynthesis
B. the ozone shield
C. digestion and reproduction
D. energy recycling in ecosystem
A.
Which process usually uses carbon dioxide molecules?
A. cellular respiration
B. asexual reproduction
C. Digestion
D. autotrophic nutrition
Autotropic
A green plant is kept in a brightly lighted area for 48 hours. What will most likely occur if the light intensity is then reduced slightly during the next 48 hours?
A. Photosynthesis will stop completely.
B. The rate at which nitrogen is used by the plant will increase.
C. The rate at which oxygen is released from the plant will decrease.
D. Glucose production inside each plant cell will increase
What is C
What are A and B on either side of an arrow in a chemical reaction? A====>B
A= Reactants
B = Products
Photosynthesis creates these components.
What are oxygen and glucose?
The component of a plant that transports water from the roots.
What is xylem?
Organisms that have the ability to use an atmospheric gas to produce an organic nutrient are known as
A. herbivores
B. decomposers
C. carnivores
D. autotrophs
What is D
The green chemical in the chloroplasts that absorbs and stores energy from the sun.
What is chlorophyll?
Scientists studying ocean organisms are discovering new and unusual species. Which observation could be used to determine that an ocean organism carries out autotrophic nutrition?
A. Chloroplasts are visible inside the cells.
B. Digestive organs are visible upon dissection.
C. The organism lives close to the surface.
D. The organism synthesizes enzymes to digest food.
Chloroplast are visible inside the cells
What is the chemical formula for Glucose?
C6H12O6
Leaves of green plants contain openings known as stomates, which are opened and closed by specialized cells allowing for gas exchange between the leaf and the outside environment. Which phrase best represents the net flow of gases involved in photosynthesis into and out of the leaf through these openings on a sunny day?
A. carbon dioxide moves in; oxygen moves out
B. carbon dioxide and oxygen move in; ozone moves out
C. oxygen moves in; nitrogen moves out
D. water and ozone move in; carbon dioxide moves out
What is A.
Plants usually store sugar as a _________.
What is glucose?
What time of day do plants open their stomata? What is the evidence of this?
What are dawn and dusk? Morning dew is the proof.
What is the equation for Photosynthesis?
CO2 + H2O + Light = O2 + Glucose