DENDROLOGY

Detailed explanation-1: -The movement towards the earth, due to gravity is called positive (+ve) geotropism like roots; and movement away from the earth is called negative (-ve) geotropism. The growth of shoots towards the sky is an example of negative geotropism.

Detailed explanation-2: -For example, the shoot of the plant shows negative geotropism whereas the roots of the plants show positive geotropism.

Detailed explanation-3: -Geotropism – a growth response to gravity We know that the growing root and shoot are also able to detect gravity. A growing root will always grow downwards (positive geotropism) and the shoot upwards (negative geotropism).