Birds ____ with the help of their tailbone.
Given below are certain statements regarding sperm organelles. With respect to these statements, choose the correct option.
Statement 1: Centrioles provide polarity to the sperm.
Statement 2: Centrioles release energy when mitochondria in sperm become dysfunctional.
Statement 3: Centrioles help in cell division in the zygote formed post fertilisation.
Statement 4: Sperm do not possess centrioles.
In the structure of a sperm, centrioles are located