MCQ
Choose incorrect pair :
- AInner cell mass - Inner group of cells
- B$16$ cells embryo - Morula
- CTrophoblast - Chorionic layer
- ✓Placenta - Secreat Oxytocin
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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?

$I$. Maintaining the ecological process.
$II$. To enrich the wild life diversity with exotic species.
$III$. Preventing migration of species.
$IV$. Maintaining the diversity of life.
The correct statement are