Why there is no cyclone at the equator

WHY THERE IS NO CYCLONE AT THE EQUATOR

The Coriolis force acts perpendicular to the Pressure gradient force. The Pressure gradient force is perpendicular to the Isobars. The higher the Pressure gradient force, the more is the Velocity of the wind and larger will be the deflection due to Coriolis force in the direction of the wind. As a result of these two forces operating perpendicular to each other, in low pressure areas, the wind blows around the low pressure, and cyclones are created. But at the Equator, Coriolis force is zero and wind blows perpendicular to the Isobars. The low pressure zone gets filled instead of getting intensified. That is why there is no cyclone at the Equator.

Source: NCERT: Fundamentals of Physical Geography.  11th class