MCQOPTIONS
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MCQOPTIONS
This section includes 40 Mcqs, each offering curated multiple-choice questions to sharpen your Biotechnology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Rice can grow in water submerged soil because the plants |
| A. | have spongy roots |
| B. | can oxidize the micro-environment around their roots and thus able to absorb oxygen |
| C. | are adapted to enable roots to ward off toxic products |
| D. | all of the above |
| Answer» E. | |
| 2. |
The volume of O liberated in photosynthesis has which of the following ratio to CO? |
| A. | 1:1 |
| B. | 2:1 |
| C. | 1:2 |
| D. | 3:1 |
| Answer» B. 2:1 | |
| 3. |
Lichen involves two organisms as |
| A. | virus and bacteria |
| B. | algae and bacteria |
| C. | algae and fungi |
| D. | fungi and mosses |
| Answer» D. fungi and mosses | |
| 4. |
Which group of plants has the greatest diversity (i.e. the most species) living today? |
| A. | Bryophyta |
| B. | Lycophyta |
| C. | Gymnosperms |
| D. | Angiosperms |
| Answer» E. | |
| 5. |
What single feature is probably most responsible for the success of angiosperms? |
| A. | Seeds |
| B. | Fruit |
| C. | Broad leaves |
| D. | Flowers |
| Answer» E. | |
| 6. |
The study of interaction between living organism and environment is called |
| A. | ecosystem |
| B. | phytogeography |
| C. | ecology |
| D. | photosociology |
| Answer» D. photosociology | |
| 7. |
Triticale is derived by crossing |
| A. | wheat and rice |
| B. | wheat and tapioca |
| C. | rye (secale) and wheat |
| D. | rye and rice |
| Answer» D. rye and rice | |
| 8. |
In angiosperm, the endosperm is |
| A. | haploid |
| B. | diploid |
| C. | triploid |
| D. | none of these |
| Answer» D. none of these | |
| 9. |
The major source of sugar in the world is |
| A. | watermelon |
| B. | beetroot |
| C. | sugarcane |
| D. | dates |
| Answer» D. dates | |
| 10. |
A group of about 300 chlorophyll molecule acting together to trap photons and transfer energy to the pigment molecule at the reaction center may be called as |
| A. | harvesting unit |
| B. | reaction center |
| C. | photosynthetic unit |
| D. | chloromass |
| Answer» D. chloromass | |
| 11. |
Which of the following bacteria genus is capable of oxidizing ammonia (NH4)? |
| A. | Nitrospina |
| B. | Nitrobacter |
| C. | Nitrosococcus |
| D. | Nitrosobacter |
| Answer» D. Nitrosobacter | |
| 12. |
What type of long chain alcohol is esterified to plant chlorophyll molecules? |
| A. | Dolichol |
| B. | Farnesol |
| C. | Phytol |
| D. | None of these |
| Answer» D. None of these | |
| 13. |
Rice can grow in water submerged soil because the plants |
| A. | have spongy roots |
| B. | can oxidize the micro-environment around their roots and thus able to absorb oxygen |
| C. | are adapted to enable roots to ward off toxic products |
| D. | all of the above |
| Answer» E. | |
| 14. |
Which of the following aid plants in the acquisition of nitrogen from nitrogen gas of the atmosphere? |
| A. | Bacteria |
| B. | Algae |
| C. | Nematodes |
| D. | Moulds |
| Answer» B. Algae | |
| 15. |
A major plant macronutrient found in nucleic acids and proteins is |
| A. | calcium |
| B. | nitrogen |
| C. | sulphur |
| D. | iron |
| Answer» C. sulphur | |
| 16. |
In the Calvin cycle of C3 plants, which molecule is the acceptor of CO2? |
| A. | Erythrose-4-phosphate |
| B. | Ribulose-l,5-diphosphate |
| C. | Ribose-5-phosphate |
| D. | Alpha-ketoglutarate |
| Answer» C. Ribose-5-phosphate | |
| 17. |
Plants absorb nitrates from soil and convert them into |
| A. | urea |
| B. | ammonia |
| C. | nitrogen |
| D. | none of these |
| Answer» C. nitrogen | |
| 18. |
Which of the following molecule is produced from the fixation of CO2 in C4 plants? |
| A. | Malate |
| B. | Oxaloacetate |
| C. | Pyruvate |
| D. | Alpha-ketoglutarate |
| Answer» C. Pyruvate | |
| 19. |
What is the metal ligand in chlorophylls? |
| A. | Copper (Cu) |
| B. | Iron (Fe) |
| C. | Magnesium (Mg) |
| D. | Manganese (Mn) |
| Answer» D. Manganese (Mn) | |
| 20. |
Auxanometer is used for measuring |
| A. | respiratory activity |
| B. | photosynthetic activity |
| C. | growth activity |
| D. | osmotic pressure |
| Answer» D. osmotic pressure | |
| 21. |
The chief source of nitrogen for green plants is |
| A. | atmospheric nitrogen |
| B. | nitrates |
| C. | ammonium salts |
| D. | low molecular weight- organic nitrogenous compound |
| Answer» C. ammonium salts | |
| 22. |
Who among the following coined the term Biotechnology? |
| A. | Karl Ereky |
| B. | James Clarke |
| C. | Paul Terasaky |
| D. | Clarke and Sommer |
| Answer» B. James Clarke | |
| 23. |
Which group of land plants is most restricted to moist environments? |
| A. | Lycophyta |
| B. | Sphenophyta |
| C. | Bryophyta |
| D. | Angiosperms |
| Answer» D. Angiosperms | |
| 24. |
Gypsum is beneficial for |
| A. | phosphorus enriched soil |
| B. | water logged soil |
| C. | alkaline soil |
| D. | saline soil |
| Answer» D. saline soil | |
| 25. |
In the bundle sheath of C4 plant __________ is/ are less than mesophyll. |
| A. | PSI |
| B. | PSII |
| C. | PSI or PSII |
| D. | PSI and PSII |
| Answer» C. PSI or PSII | |
| 26. |
During nitrogen fixation the enzyme nitrogenase catalyse the reaction. The reaction is high energy demanding which require approximately |
| A. | 12 ATP |
| B. | 18 ATP |
| C. | 25 ATP |
| D. | 7 ATP |
| Answer» C. 25 ATP | |
| 27. |
An organism that relies exclusively on pre-synthesized food molecules is |
| A. | autotrophic |
| B. | photosynthetic |
| C. | prokaryotic |
| D. | heterotrophic |
| Answer» E. | |
| 28. |
Mycorrhizae are symbiotic associations between |
| A. | algae and fungi |
| B. | root and fungi |
| C. | bacteria and root |
| D. | bacteria and fungi |
| Answer» C. bacteria and root | |
| 29. |
A very common mutualistic, symbiotic relationship between a fungus and the roots of a plant is |
| A. | lichen |
| B. | mycorrhizal |
| C. | ascomycete |
| D. | basidiomycete |
| Answer» C. ascomycete | |
| 30. |
Archaeabacteria differ from the true bacteria as they have |
| A. | different cell membrane lipids |
| B. | cell wall composition |
| C. | ribosomal RNA structure |
| D. | growth not inhibited by antibiotics |
| Answer» C. ribosomal RNA structure | |
| 31. |
Triticale, the first man made cereal is an example of |
| A. | artificial allopolyploidy |
| B. | artificial autopolyploidy |
| C. | man made crossing |
| D. | artificial evolution |
| Answer» B. artificial autopolyploidy | |
| 32. |
In the presence of carbon monoxide, nitrogen fixation |
| A. | increases |
| B. | decreases |
| C. | inhibits |
| D. | none of these |
| Answer» D. none of these | |
| 33. |
Nitrosomonous and Nitrobacter obtain their carbon for growth from |
| A. | organic compounds |
| B. | carbon dioxide |
| C. | elementary carbon |
| D. | none of these |
| Answer» C. elementary carbon | |
| 34. |
Chlorophyll is associated with |
| A. | thylakoids |
| B. | stroma |
| C. | cristae |
| D. | matrix |
| Answer» B. stroma | |
| 35. |
Organisms capable of converting N2 to NO3 are |
| A. | yeasts |
| B. | bacteria |
| C. | roundworms |
| D. | moulds |
| Answer» C. roundworms | |
| 36. |
The colour of flower is due to the presence of |
| A. | chlorophyll |
| B. | xanthophylls |
| C. | florigen |
| D. | chromoplast or anthocyanin |
| Answer» E. | |
| 37. |
What are the names of the two genders of haploid yeast cells? |
| A. | A and Alpha |
| B. | M and F |
| C. | Y(a)and Y(b) |
| D. | None of these |
| Answer» B. M and F | |
| 38. |
Neurospora is used as an experimental tool in |
| A. | ecology |
| B. | cytology |
| C. | genetics |
| D. | physiology |
| Answer» D. physiology | |
| 39. |
The proteins that forms the walls of the microtubules are |
| A. | actin |
| B. | tubulin |
| C. | pectin |
| D. | hydroxyproline |
| Answer» C. pectin | |
| 40. |
The volume of O2 liberated in photosynthesis has which of the following ratio to CO2? |
| A. | 1:1 |
| B. | 2:1 |
| C. | 1:2 |
| D. | 3:1 |
| Answer» B. 2:1 | |