Which of the following have the ability to fix atmospheric nitrogen?
1.AzolIa
2.Coli
3.Cyanobacteria
4.Azospirillium

In which of the following would you observe high mitochondrial activity?
1.Germinating seeds
2.Falling leaves
3.Ripe fruit
4.Meristematic tissue

Which of the following are the pollutants that a traffic constable is likely to inhale?
1.Carbon monoxide
2.Lead
3.Sulphur dioxide
4.Oxides of nitrogen

Match List I with List II and select the correct answer using the codes given below.
List I                                              List II
A.Tetanus                                        1. BCG
B.Tuberculosis                             2. ATS
C.Malaria                                    3. Ascorbic acid
D.Scurvy                                     4. Chloroquin

Match List I with List II and select the correct answer using the codes given below.
List I                                                                       List II
Centrosomes                                                       1. Mitochondria
Energy generators                                             2. Eukaryotic cells
Polydrolytic                                                       3. Lysosomes
Hydrolytic enzymes                                          4. Plant cell

Which of the following are affected by AIDS?
1.Blood circulatory system.
2.Nervous system.
3.Immune system.
4.Respiratory system.

Which of the following results from the germination of pulses?
1.Increase in. thiamine.
2.Increase in riboflavin.
3.Increase in vitamin C.

Which of the following is the correct sequence of the different phases of mitotic division?
1.Metaphase
2.Anaphase
3.Prophase
4.Telophase

Which of the following are involved in the making up of a DNA nucleotide?
1.Phosphoric acid
2.Deoxyribose sugar
3.Nitrogenous base

Which of the following structures are commonly present in animal cells and not in plant cells?
1.Mitochondria
2.Lysosomes
3.Ribosomes
4.Centrosomes