MCQ
Phenomenon of' industrial melanism' demonstrates.
- AGeographical isolation
- ✓Natural selection
- CMutation
- DEvolution
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Alveolar Air | Atmospheric Air | |
| $p O _{2}$ | $ X$ | $ Y$ |
| $pCO _{2}$ | $A$ | $B$ |
| List $I$ | List $II$ |
| $A.$ Common cold | $I.$ Plasmodium |
| $B.$ Haemozoin | $II.$ Typhoid |
| $C.$ Widal test | $III.$ Rhinoviruses |
| $D.$ Allergy | $IV.$ Dust mites |
:Choose the correct answer from the options given below :
$(I)$ In human body, it is made of number of muscle bundles.
$(II)$ Muscle bundles contains a number of muscle fibers and fiber is lined by the sarcollemma.
$(III)$ In Muscle fiber, sarcoplasm contains only one nucleus.
$(IV)$ In muscle fiber, sarcoplasmic reticulum is the store house of calcium ions.
$II.$ Chemical theory of origin of life was given by $....B......$