What is the approximate height of the tallest tree, $Sequoia$ $sempervirens$ (in $m$)?

Sleep movements of leaves in certain plants or photonasty is due to:

When certain tomato plants are kept in a dark room for a few days,they develop an albinism-like color. What is this phenomenon called?

What does $r$ represent in the equation $W_1 = W_0 e^{rt}$?

In the given diagram,what do $A$ and $B$ indicate? Choose the correct option.

Given below are two statements about plant growth.
Statement $I$: Curve for arithmetic growth is linear.
Statement $II$: Curve for geometric growth is exponential.
In the light of the above two statements,choose the most appropriate answer from the options given below.