1. open during the night and close during the day
2. never open
3. are always open
4. open during the day and close at night
open during the night and close during the day
1. carbon, nitrogen and hydrogen
2. carbon, hydrogen and oxygen
3. nitrogen, phosphorus and potassium
4. calcium, magnesium and sulphur
carbon, hydrogen and oxygen
1. there is no electron donor
2. oxygen is the electron acceptor
3. triose phosphate is the electron donor while acetaldehyde is the electron acceptor
4. triose phosphate is the electron donor while pyruvic acid is the electron acceptor
triose phosphate is the electron donor while acetaldehyde is the electron acceptor
1. ferredoxin
2. cytochrome
3. plastocyanin
4. an iron-sulphur protein
an iron-sulphur protein
1. Hemicellulose
2. Cellulose
3. Lipids
4. Lignin
Lignin
1. Zinc
2. Molybdenum
3. Copper
4. Manganese
Molybdenum
1. scarification
2. vernalization
3. chelation
4. stratification
stratification
1. ethylene
2. abscisic acid
3. auxin
4. cytokinin
auxin
1. Two
2. Thirty
3. Fifty seven
4. One
Thirty
1. ribulose phosphate kinase
2. fructose phosphatase
3. ribulose biphosphate carboxylase
4. phosphoenol pyruvic acid carboxylase
phosphoenol pyruvic acid carboxylase