Branches of a tree move and bend freely in high wind velocity due to the…………..
A. Presence of collenchyma
B. Presence of sclerenchyma
C. Presence of aerenchyma
D. Presence of parenchyma

Hint: There are three types of simple permanent tissues: parenchyma, collenchyma, and sclerenchyma. Tissues that have stopped growing are known as permanent tissues. These tissues have a distinct shape and organization and are derived from both primary and secondary meristematic tissues; however, they lack the ability to divide.

Complete solution:
Option A: Collenchyma cells have thin walls with secondary thickening in some regions. They give plants extra structural support and flexibility.
So, option A is correct.
Option B: Sclerenchyma is made up of dead cells that are long, thin, and narrow, with thickened walls and no internal space. The plant becomes hard and stiff as a result of this tissue.
So, option B is incorrect.
Option C: An aquatic plant contains aerenchyma cells. Large air cavities in these cells enable the plant to float in water.
So, option C is incorrect.
Option D: The cells of the parenchyma are thin-walled, flexible, and loosely packed. They are frequently alive as they reach adulthood. Their form varies depending on the role. They're filler tissue found in the plant's soft bits.
So, option D is incorrect.

Therefore, Option A is the correct answer.

Note:
Permanent tissues can be divided into two groups based on their constituent cells: Parenchyma, collenchyma, and sclerenchyma are examples of simple tissue. Two types of complex tissue are Xylem and Phloem. Parenchyma is alive, walled cells that are soft due to the lack of thin-walled cells.
Collenchyma – These are living cells with an uneven thickness to their walls. This uneven thickening of cell walls provides partially hard mechanical support derived primarily from the elongated cells of ground meristems, and occasionally procambium.
Sclerenchyma – These cells have thickened lignified walls to have strength and waterproofing.