Plants Flashcards
How much of a tree’s mass is from sunlight
None, energy does not equal mass
How much mass of a tree is from the air
Most of a trees mass is carbon which comes from CO2 in the air and bonds with h2o to make glucose which is the food for the tree. Carbon also has a high mass
How much of a tree’s mass is from the ground
a small amount of sulfur, phosphorus, and nitrogen is brought into the tree with water
How much of a tree’s mass is from water?
Some, only H contributes to glucose and the oxygen is released as gas
Greatest percentage of a tree’s mass?
The air
What are the 6 elements found in the bio molecules that make up organisms?
C, H, O- Carbs, fats, proteins, nucleic acids, atp
N- Amino acids, nucleotides
S- Amino acids
S- Nucleic acids, Atp
What compounds does the suns energy end up?
In glucose, amino acids, glycerol, fatty acids, nucleotides
What structure in leaves let’s CO2 in?
Stomata
What structure of a plant lets water in?
Xylem
What structure of a plant lets food into trees?
Phloem
What do stomata let out during the daylight
H2O + O2
Why do plant structures have to be open at night?
To let O2 in to respirate
What compound are O atoms when plants are grown in light
Oxygen in CO2- Glucose amino acids, fatty acids
H2O- CO2
Rates of CO2 productive during respiration and photosynthesis during night and day
Plants use less Co2 at night because plants don’t photosynthesize at bc of lack of sunlight so there’s more of it
Plants use more CO2 than they release because they’re using it for photosynthesis
Why do plants need both a mitochondria and chloroplasts to make ATP
ATP made by chloroplasts is only for photosynthesis
