MCQ
Select the correct statement
- APolar body and sperm are haploid
- BMorula and blastocyst are a type of embryo
- CRelaxin is secreted from ovary and placenta
- ✓All
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$\begin{array}{|p{0.3\linewidth}|p{0.6\linewidth}|} \hline Column\,\,-I & Column\,\,-II \\ \hline (p)\,\,Sponges & (I)\,\,Through\,\,tracheal\,\,tubes \\ \hline (q)\,\,Insects & (II)\,\,Through\,\,lungs \\ \hline (r)\,\,Molluscs & (III)\,\,Vascularized\,\,gills \\ \hline (s)\,\,Reptiles & (IV)\,\,Simple\,\,diffusion\,\,over\,\,their\,\,entire\,\,body\,\,surface \\ \hline & (V)\,\,by\,\,their\,\,moist\,\,cuticle \\ \hline \end{array}$
$p - q - r - s$
Column $A$ Column $B$
(i) Oncogenes (1)Causes $AIDS$
(ii) Single circular $DNA$ (2)Lac-Operon concept
(iii) Splicing (3) Component of bacterial chromosome
(iv) Jacob and Monad (4) Processing of $mRNA$ molecules
(5) When activated cause cancer
$(i) (ii) (iii) (iv)$ respectively