MCQ
Karyokinesis is the term used for:
- ADivision of cytoplasm.
- BDivision of nucleoplasm.
- CDivision of nucleus.
- ✓Separation of daughter chromosomes.
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$(i)$ Mouth opens into a short tubular pharynx, leading to a narrow tubular passage called oesophagus.
$(ii)$ Gizzard helps in grinding the food particles.
$(iii)$ A ring of $6-8$ blind tubules called hepatic or gastric caecae is present at the junction of foregut and midgut, which secrete digestive juice.
$(iv)$ At the junction of midgut and hindgut is present another ring of $100-150$ yellow coloured thin filamentous malphigian tubules which help in removal of excretory products from haemolymph.
$\begin{array}{|p{0.3\linewidth}|p{0.6\linewidth}|} \hline Column\,\,-I & Column\,\,-II \\ \hline (p)\,\,Sponges & (I)\,\,Through\,\,tracheal\,\,tubes \\ \hline (q)\,\,Insects & (II)\,\,Through\,\,lungs \\ \hline (r)\,\,Molluscs & (III)\,\,Vascularized\,\,gills \\ \hline (s)\,\,Reptiles & (IV)\,\,Simple\,\,diffusion\,\,over\,\,their\,\,entire\,\,body\,\,surface \\ \hline & (V)\,\,by\,\,their\,\,moist\,\,cuticle \\ \hline \end{array}$
$p - q - r - s$