hypotonic
Saltwater (a hypertonic solution) with the celery cells (a hypotonic solution) causes a concentration gradient where the water from the celery will escape into the hypertonic solution, shrinking the celery in a process known as plasmolysis.
Celery stays fresher in hypotonic water because it creates a lower concentration of solutes inside the celery cells compared to the surrounding water, allowing for water to flow into the cells through osmosis and keep the celery crisp. In hypertonic water, the higher concentration of solutes outside the celery cells would cause water to move out of the cells, leading to wilting.
The cells of the celery stalk are hypertonic to fresh water, causing water to move into the cells through osmosis, making them stiff. When placed in a salt solution, the cells become hypotonic, causing water to move out of the cells, resulting in a limp texture.
hypertonic to fresh water but hypotonic to the salt solution
Because a hypertonic solution will take away the water from the plant, making the plant limp.
Salt water and sugar water are hypertonic solutions, meaning they have a higher concentration of solute than inside the celery cells. This causes water to move out of the celery cells, leading to wilting. Plain water is a hypotonic solution, so water moves into the celery cells by osmosis, making the celery more firm and crisp.
Pure water because the concentration gradient would cause water to move from a hypertonic region to a hypotonic region.
The wilted celery may absorb some water and become slightly more hydrated, but it may not fully revive it. The lack of nutrients in distilled water may limit the celery's ability to fully recover. It is best to use a solution with nutrients, such as a mix of water and plant fertilizer, to help wilted celery recover.
A likely component of the solution that causes the celery stalk to wilt is a high salt concentration. Salt draws water out of the cells of the celery through the process of osmosis, leading to the wilting of the stalk.
The veins of the celery turn the color of the dye. It's very cool when you slice it open.
Celery may taste bitter after soaking in a sugar solution because the sugar draws out water from the celery, which can concentrate bitter compounds present in the vegetable. Additionally, some people are more sensitive to bitter flavors, so the change in taste perception could be more noticeable.
The salt outside the celery is higher than it is inside. Water will leave the celery and it will (over time) become wilted. If you put the celery into plain water, the water will move into the celery causing it to become firmer. The water will always move to where there is more salt. There is a saying that "water follows salt".