$A$ bifacial organ bends towards the side where:

Which of the following four phases, in the post-emergence life of an angiospermic plant, begins just after the germination of the seed and ends when the plant develops the capacity to reproduce?

Growth in length of a plant can be measured by

In which of the following is thigmotropic movement best observed?

Arithmetic growth can be expressed mathematically by the formula $L_t = L_0 + rt$,where $L_t$ stands for . . . . . . .

$A$ rubber band stretches and reverts back to its original position. Bubble gum stretches,but it would not return to its original position. Is there any difference between the two processes? Discuss it with respect to plant growth. [Hint: Elasticity (reversible),Plasticity (irreversible)]