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

Which of the following organelles does not have a cell membrane?

Name the plastid which stores starch,oils and protein granules.

State the function of chromosome in a cell.

Name the cell organelle which you would associate with the elimination of old and worn-out cells.

Which of these options are not a function of Ribosomes?
$(i)$ It helps in the manufacture of protein molecules.
$(ii)$ It helps in the manufacture of enzymes.
$(iii)$ It helps in the manufacture of hormones.
$(iv)$ It helps in the manufacture of starch molecules.