1. The haeme protein complexes, which act as oxidising agents are known as
8. The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in leguminous root nodule is
a) Haemoglobin
b) myoglobin2. The non-sister chromatids twist around and exchange segments with each other during
c) chlorophyll
d) Cytochrome
a) diplotene3. In C3 plants , the first stable compound formed after CO2 fixation is
b) pachytene
c) Zygotene
d) diakinensis
a) 3-Phosphoglyceraldehyde4.Which one of the following is an amide involved in nitrogen assimilation by plants?
b) malic acid
c) oxaloacetic acid
d) ribulose 1,5 biphosphate
a) Glutamate5. Cohesion theory of water movements in plants was put forth by
b) Alanine
c) Asparagine
d) Serine
a) Melvin Calvin6. Which one of the following is wrongly matched
b) Hans A Krebs
c) Henry Dixon
d) Englemann
a) Fungi- Chitin7.An example of non competition inhibition is
b) Phospholipids- plasma membrane
c) Enzyme- Lipopoly saccharide
d) antibody- glycoprotein
a) the inhibition of succinic dehydrogenase by malonate
b) cyanide action of cyctochrome oxidase
c) sulpha drug on folic acid synthesising bacteria
d) reaction of succinic dehydroganse
8. The enzyme responsible for the reduction of molecular nitrogen to the level of ammonia in leguminous root nodule is
a) nitrogenase9. The mineral involved in the photolysis of water are
b) carboxylase
c) nitrite reductase
d) nitrate reductase
i) manganese iii) magnesium10. The enzyme responsible for primary carboxylation in C 3plants is
ii) calcium iv) chloride
a) i and ii only
b) i, ii and iv only
c) i and iv only
d) iii and iv only
a) hexokinase11. The RQ value of oxalic aid is
b) succinic dehydrogenase
c) RuBP carboxylase oxygenase
d) PEP carboxylase
a) 1.012. Which one of the following is commonly found in temperate coniferous forest
b) 4
c) 1.5
d) 0.7
a) Quercus13. The shade tolerant plants are known as
b) Prosopis
c) Dipterocarpus
d) Pinus wallichiana
a) psammophytes14. The response of different organisms to environmental rhythms of light and darkness is called
b) halophytes
c) sciophytes
d) Heliophytes
a) Photoperiodism15. The ripening of fruits can be fastened by treatment with
b) Phototaxis
c) Vernalization
d) Phototropism
a) Gibberellins
b) Ethylene
c) ABA
d) Cytokinin
Answers:
For More: Biology MCQs/ Previous Question Papers
- d) Cytochrome
- b) pachytene
- a) 3-Phosphoglyceraldehyde
- c) Asparagine
- c) Henry Dixon
- c) Enzyme- Lipopoly saccharide
- b) cyanide action of cyctochrome oxidase
- a) nitrogenase
- b) i, ii and iv only
- c) RuBP carboxylase oxygenase
- b) 4
- d) Pinus wallichiana
- c) sciophytes
- a) Photoperiodism
- b) Ethylene