Question

Gaseous substances are given out by__________.

Answer 1

The Gaseous Substance given out by plants by the process of diffusion. During photosynthseis carbon dioxide diffuses from the atmosphere to the cell and oxygen diffuses out to the atmosphere.

Answer 2

Answer:

Gaseous substances are given out by diffusion.

Explanation:

• $CO_2$diffuses into leaves and into cells during the diffusion process, but oxygen and water vapour created by photosynthesis is released from the cells, hence the diffusion process is carried out by gas exchange.
• The process of gas diffusion can be defined as the movement of gases. liquids or solutes from high-concentration areas to low-concentration areas until the molecules are evenly distributed across the available space Diffusion allows dissolved carbohydrates and potassium and sodium ions to flow across cell membranes.