NEET BIOLOGY

Detailed explanation-1: -Physiological support is temporary and refers to the ability of plant cells to increase or decrease their turgidity via osmosis. Structural support is permanent and refers to deposition of strong compounds into cell walls in specific locations in the plant that require additional support or waterproofing.

Detailed explanation-2: -Physiological support is provided by the water in each plant cell’s vacuole, which exerts turgor pressure upon the cell membrane, causing it to press against the cell wall, making the cells swollen and firm and the plant as a whole rigid and upright.

Detailed explanation-3: -Deposition of cellulose or lignin on the plant cell walls or on some of its parts such as the collenchyma cells and sclerenchyma cells (fibers and stone cells) to acquire them the turgidity and strength, where the site of presence of these cells and their distribution support the plant.

Detailed explanation-4: -The cell wall provides strength and support to the plant, much like the exoskeleton of an insect or spider. Our skeletons are inside our bodies, rather than on the outside like insects or spiders. The plant cell wall is mainly made up of the carbohydrates molecules cellulose and lignin.