In ureotelic animals, urea is formed by

MCQ

✓

Answer

Correct option: A.

Ornithine cycle

a
It’s obvious.

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$III.$ pigmentation, $IV.$ Metabolism,

$V.$ Defense capability

All of the above written activities are influenced/ regulated by

$I.$ 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?

Statement I: Heart is endodermally derived organ.
Statement II: Heart is protected by a double walled membranous bag, called myocardium.