Question

In rotation type of cyclosis, the cytoplasmic matrix flows in__________
A) One direction
B) Two opposite direction
C) Different directions
D) Side-ways

Answer 1

Hint:Cyclosis is the process of streaming of cytoplasm within a living cell without the deformation of the external cell membrane. Cyclosis is also called cytoplasmic streaming. The flow of cytoplasm inside the cell driven by forces from the cytoskeleton is cyclosis.

Complete answer:
Cyclosis is usually found in large plants and animals cellsIn the smaller cells the diffusion is seen but in larger cells the cyclosis is seen because the diffusion slows as the size of the cell increases.Cyclosis is dependent on intracellular pH and temperature.Cytoplasmic streaming is also studied in green alga genus chlara.The rotational cyclosis means the protoplasm moves around single central vacuoles in either clockwise or anticlockwise direction.The cytoplasmic streaming happens due to the motion of organelles which are attached to the actin filaments via myosin motor proteins.Myosin moves only in one direction along the actin filament.
So in the rotational type of cyclosis the cytoplasmic matrix flows in one direction.

Hence the correct answer is option ‘A’.

Note:The cyclosis is the streaming of the cytoplasm around the cell. It takes the organelles along with it. The cyclosis helps in transporting the materials around the cell. The proteins and nutrients are transported within the cells because of the cyclosis. The cytoplasmic streaming is highest at neutral ph and decreases at both low and high ph. The cyclosis enhances the nutrient transport and better growth.