When food supply is poor,the rate of growth is

Given below is a graph drawn on the parameters of growth versus time. $A, B$ and $C$ respectively represent

In watermelon,cells can increase in size up to $...........$ times.

The optimum temperature preferred for plant growth is

Movements of leaves of sensitive plant, $Mimosa \text{ } pudica$, are due to

$A$ few normal seedlings of tomato were kept in a dark room. After a few days,they were found to have become white-coloured like albinos. Which of the following terms will you use to describe them?