The number of mitochondria increases in cells of

In geometrical growth,the log phase is represented by:

Both animals and plants grow. Why do we say that growth and differentiation in plants is open and not so in animals? Does this statement hold true for sponges also?

In a vascular plant,the exponential phase represents the phase of

$A$ leaf of $20 \; cm^{2}$ grows $5 \; cm^{2}$ per hour and a leaf of $25 \; cm^{2}$ grows $5 \; cm^{2}$ per hour. The relative growth rate of leaf $A$ and $B$ respectively is:

In geometric growth,the total number of cells produced after four successive mitotic divisions will be . . . . . .