Define cell. What does it mean in Latin?

Which kind of plastid is more common in:
$(a)$ Roots of the plant
$(b)$ Leaves of the plant
$(c)$ Flowers and fruits

Chromosomes are made-up of

If cells of onion peel and $RBC$ are separately kept in a hypotonic solution,what among the following will take place? Explain the reason for your answer.
$(a)$ Both the cells will swell.
$(b)$ $RBC$ will burst easily while cells of onion peel will resist the bursting to some extent.
$(c)$ Both $(a)$ and $(b)$ are correct.
$(d)$ $RBC$ and onion peel cells will behave similarly.

Classify the organisms on the basis of the number of cells. Give two examples each.

Name the energy currency of the cell. Which cell organelle releases this currency?