MCQ
A bacteriophage is
- ✓A virus attacking a bacterium
- BA bacterium attacking a virus
- CA stage in the life-cycle of bacterium
- DA virus attacking another virus
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| List $I$ | List $II$ |
| $A.$ Fibrous joints | $I.$ Adjacent vertebrae, limited movement |
| $B.$ Cartilaginous joints | $II.$ Humerus and Pectoral girdle, rotational movement |
| $C.$ Hinge joints | $III.$ Skull, don't allow any movement |
| $D.$ Ball and socket joints | $IV.$ Knee, help in locomotion |
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$R$ : It allowed the animal to have an alimentary canal longer than the body & space for storing gametes.
| List $I$ | List $I$ |
| $A$ $P$ wave | $I$ Heart muscles are electrically silent. |
| $B$ $QRS$ complex | $II$ Depolarisation of ventricles. |
| $C$ $T$ wave | $III$ Depolarisation of atria. |
| $D$ $T-P$ gap | $IV$ Repolarisation of ventricles. |
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