Botany Multiple Choice Questions and Answers

21. Carbon monoxide is pollutant as it

1. Inactivates nerves
2. Inhibits glycolysis
3. Combines with oxygen
4. Combines with haemoglobin.

22. Carbon monoxide kills because it destroys

1. Haemoglobin
2. Phytochrome
3. Cytochrome
4. Both a and b.

23. Chief air pollutant which is likely to deplete ozone layer is

1. Sulphur dioxide
2. Carbon dioxide
3. Carbon monoxide
4. Nitrogen oxides and Fluorocarbons.

24. Classical taxonomy is also termed

1. Beta taxonomy
2. Systematic
3. Descriptive taxonomy
4. Experimental taxonomy

25. Coacervates were experimentally produced by

1. Oparin and Haldane
2. Darwin
3. Aristotle
4. Louis Pasture

26. Coacervates were formed by

1. DNA
2. Radiations
3. Polymerization
4. Polymerisation and aggregation

27. Component of smog

1. O3
2. PAN
3. PPN & PAN
4. Both a and b

28. Composted manure is produced from

1. Farmyard manure and green manure
2. Farm refuse and household refuse
3. Organic remains of biogas plants
4. Rotten vegetables and animal refuse

29. Considering corms of natural vegetative propagation, buds are present at

1. Front side of corm
2. Backside of corm
3. Top of corm
4. End of corm

30. Cryopreservation is a technique used for

1. Crystallization of food
2. Food packing
3. Seed saving
4. Preservation of excess production of vegetables