STD 11 - 8. Cell the unit of life — NEET STD 11 Science — Question

$I.$ DNA being a hydrophilic molecule cannot pass through cell membranes

$II.$ Agrobacteriumtumefaciens delivers a piece of $DNA$ known as $'Z-DNA'$ in the Tiplasmid which transforms normal plant cells into tumour cells to produce chemical against pathogens

$III.$ Retrovirus, adenovirus, papillomavirus are also now used as cloning vectors in animal because of their ability to transform normal cells into cancerous cell.

$IV.$ In genetic engineering, $DNA$ from different sources are cut with the same restriction enzymes so that both $DNA$ fragments have same kind of sticky ends

Choose the correct option

$Y$ - The diversity of plants and animals is not uniform throughout the world but show a rather uneven distribution.

$Z$ - Species - area relationships was given by Alexander Von Humboldt.

$X -Y -Z$