MCQ
$3-D$ structure of $\text{RNA}$ is called:
- ✓Clover leaf model
- BHair pin model
- CHelical model
- DPlate model
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$I.$ Methanogenic bacteria are commonly found in the anaerobic sludge formed during sewage treatment
$II.$ These bacteria are also occur in rumen of the cattle where they act upon cellulosic material to breakdown cellulose
$III.$ They play a very important role in the nutrition of cattle by digesting cellulosic material
Which of the statement given above are correct?
| $(a)$ Fourth trophic level | $(i)$ Crow |
| $(b)$ Second trophic level | $(ii)$ Vulture |
| $(c)$ First trophic level | $(iii)$ Rabbit |
| $(d)$ Third trophic level | $(iv)$ Grass |
Select the correct option :
$(a)\quad(b) \quad(c) \quad(d)$
| $i$ | Environment Protection Act | $A.$ | $1974$ |
| $ii$ | Air Prevention $\&$ Control of Pollution Act | $B.$ | $1987$ |
| $iii$ | Water Act | $C.$ | $1986$ |
| $iv$ | Amendment of Air Act to include noise | $D.$ | $1981$ |