Which of the following are covered by a single membrane?

State whether the following statement is true or false:
Mitochondria have three membrane coverings.

Describe the role played by the Lysosomes. Why are they termed as 'suicidal bags'? How do they perform their function?

Write the name of different plant parts in which chromoplast,chloroplast,and leucoplast are present.

In brief,state what happens when:
$(a)$ dry apricots are left for some time in pure water and later transferred to a sugar solution?
$(b)$ a Red Blood Cell $(RBC)$ is kept in a concentrated saline solution?
$(c)$ the plasma membrane of a cell breaks down?
$(d)$ Rhoeo leaves are boiled in water first and then a drop of sugar syrup is put on them?
$(e)$ the Golgi apparatus is removed from the cell?

$(i)$ Differentiate between rough and smooth endoplasmic reticulum.
$(ii)$ How is endoplasmic reticulum important for membrane biogenesis?