Photosynthesis and respiration Flashcards
What is chlorophyll?
Chlorophyll is a green pigment found in plant cells. It is important as it harnesses the sun’s energy to help make food for the plant.
What are Chloroplasts?
Chloroplasts are organelles found in specialized plant cells. These organelles contain chlorophyll, responsible for the leaf’s green colour. It has two outer membranes
What are Stomata?
Stomata are pores found in leaves to absorb gasses of the atmosphere. Stomata have two guard cells called a stoma.
What is Carbon-di-oxide?
Carbon-di-oxide is a slightly toxic gas found in the atmosphere as raw material. Carbon-di-oxide is slightly acidic.
What is the function of a leaf?
The primary function of a leaf is to absorb sunlight to create food for the plant through the process of photosynthesis
Does the structure of leaves match their function?
Yes, the structure of leaves matches their function.
Ex: A leaf is broad so that it can absorb more sunlight as that is the primary function of the leaf.
Talk about leaf tissues and cells
A leaf has 5 tissues those are:
Cuticle (Protective layer)
Upper epidermis (also protection and light easily passes)
palisade and spongy layers (photosynthesis)
Lower epidermis ( gas absorption)
What are the palisade and spongy layers of a leaf
Photosynthesis occurs in these layers. The palisade layers have elongated cells. These cells contain a lot of Chlorophyll. The spongy layer has space in between cells for CO2 to diffuse in.
What are in the veins of a leaf, what do they do?
The veins of a leaf contain Xylem and Phloem. Xylem is responsible for transferring the water nutrients to other parts of the plant while Phloem is responsible for transferring food to other parts of the plant
What is the importance of stomata in the lower epidermis?
Stomata are pores found in the lower epidermis. They allow CO2 In the plant and let O2 be removed from the plant. They are opened and closed by guard cells called a stoma.
What are producers?
Producers are organisms that can produce or make their own food.
What are autotrophs?
Autotrophs are organisms that use the suns energy to make food and create complex chemical bonds.
What are photosynthesis and its process in brief?
Photosynthesis is a chemical process occurring in plants, algae and cyanobacteria. In the process of photosynthesis, we use the sun’s energy to break down H2O and CO2 and make it glucose (C6H12O6) and O2. This process can be written as:
Carbon-di-oxide + Water + Sunlight = Glucose + Oxygen
Why is photosynthesis central to sustaining life on earth?
Photosynthesis is called the most important chemical reaction for life because all organisms get their energy from plants. Directly or indirectly. So Every organism is dependent on these plants to create food through the process of photosynthesis.
What is the chemical reaction for photosynthesis
6CO2 + 6H2o + Sunlight = C6H12O6 + 6O2
