GEOLOGY

Detailed explanation-1: -Collenchyma is present at junction of a branch. Collenchyma provides rigidity with flexibility. Due to this, branches of tree move and bend freely in high wind velocity.

Detailed explanation-2: -Strong winds cause trees to sway, pulling and stretching their roots. The movement disrupts root-soil contact, decreasing water absorption and increasing the severity of water stress in trees. The leaf biomass of 12 different western conifers was found to be reduced by as much as 36% by occasional wind storms.

Detailed explanation-3: -When light is coming from one side of the plant, auxin diffuses towards the shaded side of the shoot. This concentration of auxin stimulates the cells to grow longer on the side of the shoot which is away from light. Thus, the plant appears to bend towards the light.

Detailed explanation-4: -rustlings; rustlingly. A rustling is a gentle swishing sound, like the rustling of leaves in the trees on a breezy night.