STD 11 - 13. Plant growth and development — NEET STD 11 Science — Question

Reason $(R):$ Due to low atmospheric pressure at high altitude, the body does not get sufficient oxygen.

In the light of the above statements, choose the correct answer from the options given below.

$I$. In the absence of adenosine deaminase enzyme, purine metabolism is disturbed and $T-$lymphocytes fails to function $II$. $ADA$ deficiency is caused by the deletion of the gene for $ADA$

$III$. In some cases, it can be cured by bone marrow transplantation and enzyme replacement therapy. But in both approaches, the patients are not completely cured

$IV$. For permanent cure, genes isolated from the bone marrow cells producing $ADA$ at early embryonic stages can be a possible cure

Which of the above statements are correct?

$I.$ Recent studies support competition as suggested in 'Gauses's Competitive Exclusion Principle'

$II.$ Gause's hypothesis says if two species compete for same resources then one will be eliminated by another species

$III.$ More recent studies point out that species facing competition might evolve mechanisms that promote co-existence rather than exclusion

$IV.$ Gause's competitive exclusion principle is effective when resources are in excess

$V.$ Unlimited resources give better opportunity for adaptation

Choose the correct combination of statements