The tubules in each triplet of the structure shown in the figure are made of which protein?

Identify the components labelled $A, B, C$ and $D$ in the given section of cilia/flagella showing different parts. Choose the option which shows the correct labelling of parts.

Which of the following organelles is helpful in cell division?

The function of the centrosome is to $......$.

Which cytoplasmic organelle plays an important role during cell division?

Which one of the following forms the spindle apparatus during cell division?