Final answer:
Telocentric chromosomes have no 'p' arms because their centromere is at the very end of the chromosome.
Step-by-step explanation:
The type of chromosome with no 'p' arms, which are the short arms of the chromosome, is termed a telocentric chromosome. Chromosomes are characterized by their morphology based on the placement of the centromere, and when the centromere is situated at the very end of the chromosome, effectively there is no 'p' arm, only a long 'q' arm. Such a chromosomal structure is unique to the telocentric chromosome type.