This relates to the type of solution the plant cells are exposed to. In general, there are 3 distinct types of solutions in nature: hypotonic, isotonic, and hypertonic. A hypotonic solution is one that has a low concentration of a solute relative to the solute concentration inside the cell, such as distilled water. An isotonic solution has the same solute concentration as the inside of the cell. A hypertonic solution has a higher concentration of solute than the inside of the cell.
Back to the plants...
When plants wilt, that means the are exposed to an isotonic solution. When this happens, the net amount of water moving between cells and the environment is equal. As a result, the cell becomes flaccid and the plant wilts.
When plants stand erect, this is a result of turgor pressure. When in a hypotonic solution, such as distilled water, the plant cells absorb the water and store it in its central vacuole. The cell cytoplasm enlarges and pushes up against the sturdy cell walls. This cell is said to be turgid, or stable.
Herbaceous plants wilt when they lack water because the cells lose turgor pressure, causing the plant to droop. When they have enough water, the cells become turgid and the plant stands upright due to the pressure within the cells. Water plays a crucial role in maintaining cell turgidity, which affects the plant's overall structure and turgor pressure.
A horny plant
The ancestors of land plants, green algae, lack the structural support to stand erect in air.
a. stand erect with palms facing forward
Most cell walls are porous to water and other materials but are strong enough to help plants stand against gravity and wind.
Yes
How higher plants stand erect in air their soft organs remain firm,
Many people slouch when they stand, but it is better posture to stand erect.
A horny plant
The ancestors of land plants, green algae, lack the structural support to stand erect in air.
varies, but should be erect by 6 months
One simple example is a tree, which can stand upright alone. Some plants, especially some garden plants, may need help to keep upright by using bamboo canes, etc.
No. Trout do not stand upright.
no
a. stand erect with palms facing forward
The skeletal system, which provides the structure and support, works together with the muscular system, which controls movement and posture, to help a person stand erect. The bones provide a framework for the body to stand on, while muscles contract and relax to maintain balance and alignment.
Plants are able to stand upright thanks to the turgor pressure in the cells. The large central vacuole in the plant cells are able to take up water and makes the cell more rigid and the overall plant erect.
Most cell walls are porous to water and other materials but are strong enough to help plants stand against gravity and wind.