In which type of chromosome is one arm very short and the other arm very long?

$DNA$ is concentrated in:

The nucleolus is synthesized at which region?

The given diagram shows a chromosome. Which of the following data refers correctly to the chromosome?
No. of Centromere - No. of Kinetochore - No. of Arms

Which of the following statements is/are correct?
$(a)$ The nuclear matrix or nucleoplasm contains the nucleolus and chromatin.
$(b)$ The outer nuclear membrane $(Ectokaryotheca)$ is usually continuous with the endoplasmic reticulum and also bears ribosomes on it.
$(c)$ Cells that are actively synthesizing protein have small and fewer nucleoli.

The chromosome with centromere near the end is called . . . . . . .