RESPIRATION IN PLANTS
1> Differentiate between
a. aerobic and anaerobic respiration.
Aerobic respiration Anaerobic respiration
1. Takes place in the presence 1. It takes place in the absence
of oxygen. or shortage of oxygen.
2. Complete oxidation of food 2. Incomplete oxidation of food
takes place. takes place.
3. 38 ATP molecules are 3. 2 ATP molecules are
produced by the oxidation of produced by the oxidation of
one glucose molecule. one glucose molecule.
4. Its end products are CO2 and 4. Its end products are ethyl
H2O alcohol and CO2
b. respiration and combustion.
Respiration Combustion
1. It occurs in the living cells. 1. It does not occur in the living
cells.
2. It takes place at room 2. It takes place at high
temperature. temperature.
3. It is a slow process. 3. It is a fast process.
4. Energy is released in several 4. Energy is released in the
steps and stored as ATP. form of heat and light.
5. Enzymes are involved. 5. No enzyme is involved.
6. Conversion of carbohydrates 6. Carbon dioxide and water
to carbon dioxide and water are produced in one step.
occurs in many steps.
c. stomata and lenticels.
Stomata Lenticels
1. Leaves and young green 1. n certain trees, the old and
stems have pores on them. mature roots and hard
These pores are called woody stems are covered by
stomata. bark, which is impervious to
gases or water. Within the
layer of the bark, there are
very tiny openings called
lenticels.
2. They are surrounded by 2. At the base of the lenticels
guard cells. are loosely arranged cells
that allow the diffused gases
to pass through them.
1> Differentiate between
a. aerobic and anaerobic respiration.
Aerobic respiration Anaerobic respiration
1. Takes place in the presence 1. It takes place in the absence
of oxygen. or shortage of oxygen.
2. Complete oxidation of food 2. Incomplete oxidation of food
takes place. takes place.
3. 38 ATP molecules are 3. 2 ATP molecules are
produced by the oxidation of produced by the oxidation of
one glucose molecule. one glucose molecule.
4. Its end products are CO2 and 4. Its end products are ethyl
H2O alcohol and CO2
b. respiration and combustion.
Respiration Combustion
1. It occurs in the living cells. 1. It does not occur in the living
cells.
2. It takes place at room 2. It takes place at high
temperature. temperature.
3. It is a slow process. 3. It is a fast process.
4. Energy is released in several 4. Energy is released in the
steps and stored as ATP. form of heat and light.
5. Enzymes are involved. 5. No enzyme is involved.
6. Conversion of carbohydrates 6. Carbon dioxide and water
to carbon dioxide and water are produced in one step.
occurs in many steps.
c. stomata and lenticels.
Stomata Lenticels
1. Leaves and young green 1. n certain trees, the old and
stems have pores on them. mature roots and hard
These pores are called woody stems are covered by
stomata. bark, which is impervious to
gases or water. Within the
layer of the bark, there are
very tiny openings called
lenticels.
2. They are surrounded by 2. At the base of the lenticels
guard cells. are loosely arranged cells
that allow the diffused gases
to pass through them.
