Question

Match column A with column B Column A Column B1. Roots growing downwards into soil Positive phototropism2. Shoots growing towards the light Negative geotropism3. Shoots growing upward Negative phototropism4. Roots growing downwards away from light Positive geotropism

Answer 1

"The orientation of a shoot system of plant is its response to light, this is called as phototropism.

If this response is towards light, called positive phototropism.

If this response is away from the source of light, called negative phototropism.

The root system of a plant would grow down as the stem grows upward. This gravity response is known as geotropism.

Here, roots show positive to geotropism whereas the stem shows negative to geotropism.

Roots growing into soil - positive geotropism

Shoots growing towards light - positive phototropism

Shoots growing upward away from light - negative phototropism

Roots growing downward - positive geotropism"