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

4
Correct Answer :

open during the night and close during the day


Explanation :
No Explanation available for this question

1.  carbon, nitrogen and hydrogen

2.  carbon, hydrogen and oxygen

3.  nitrogen, phosphorus and potassium

4.  calcium, magnesium and sulphur

4
Correct Answer :

carbon, hydrogen and oxygen


Explanation :
No Explanation available for this question

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

4
Correct Answer :

triose phosphate is the electron donor while acetaldehyde is the electron acceptor


Explanation :
No Explanation available for this question

1.  ferredoxin

2.  cytochrome

3.  plastocyanin

4.  an iron-sulphur protein

4
Correct Answer :

an iron-sulphur protein


Explanation :
No Explanation available for this question

1.  Hemicellulose

2.  Cellulose

3.  Lipids

4.  Lignin

4
Correct Answer :

Lignin


Explanation :
No Explanation available for this question

1.  Zinc

2.  Molybdenum

3.  Copper

4.  Manganese

4
Correct Answer :

Molybdenum


Explanation :
No Explanation available for this question

1.  scarification

2.  vernalization

3.  chelation

4.  stratification

4
Correct Answer :

stratification


Explanation :
No Explanation available for this question

1.  ethylene

2.  abscisic acid

3.  auxin

4.  cytokinin

4
Correct Answer :

auxin


Explanation :
No Explanation available for this question

1.  ribulose phosphate kinase

2.  fructose phosphatase

3.  ribulose biphosphate carboxylase

4.  phosphoenol pyruvic acid carboxylase

4
Correct Answer :

phosphoenol pyruvic acid carboxylase


Explanation :
No Explanation available for this question

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