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In most mammals, it involves oxygen from air being trasported across the "type I pneumocyte" (a broad, thin, leaf-like cell) which makes up the lining of the alveoli (air sacs) of the lungs. The other cell in close association with the pneumocyte is the 'endothelial cell'. This cell makes up the lining of the small blood vessel next to alveoli. Gas is exchanged across these cells by diffusion.
Carbon dioxide, the main waste product of metabolism, diffuses rapidly across these two cells so we can exhale it.
Oxygen is not as soluble and the hemoglobin of blood facilites this diffusion so we can absorb it into our blood.
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A layer of cells in a leaf involved in gas exchange?
The layer of cells in a leaf that is primarily involved in gas exchange is the mesophyll. It is made up of two types of cells: palisade and spongy cells. The palisade cells are responsible for photosynthesis, while the spongy cells facilitate gas exchange, allowing for the uptake of carbon dioxide and release of oxygen.
What are the parts of the elodea leaf and what are the functions of the parts?
The main parts of an Elodea leaf are the cuticle (protective outer layer), epidermis (outer layer of cells), palisade layer (primary site of photosynthesis), spongy mesophyll layer (site of gas exchange), and stomata (pores for gas exchange). The cuticle protects the leaf, the epidermis provides structure, the palisade layer helps in photosynthesis, the spongy mesophyll layer aids in gas exchange, and stomata regulate gas exchange.
What Is the dfference between paliside and spongy?
The palisade layer of cells is tightly packed, like a brick wall, and contains the greatest concentration of chloroplasts in the leaf. The spongy mesophyll is loosely packed, containing many air spaces between the cells. The mesophyll contains vascular bundles and fewer chloroplasts than the palisade. Simply put, the palisade's main purpose is photosynthesis, and the spongy's gas exchange.
What The inner layer of cells is the .?
The inner layer of a cell is called the endoderm.
What is the site for gas exchange?
the organ that is involved in gas exchange is the lung. the specific lung structure that is the site for gas exchange is the alveolus which is part of the alveoli, which is found in the lung.
Why are cells of the spongy layer packed so loosely together?
All plant cells respire all of the time and need to exchange gases. The main gas exchange surface in plants are the spongy mesophyll cells in the leaves. Leaves have a huge surface area, and the irregular-shaped, loosely-packed spongy cells increase the area for gas exchange even more.
What does the spongy layer of a privet leaf do?
Spongy Layer - A layer of the mesophyll. The spongy layer consists of chloroplasts and parenchyma cells, and relatively large intercellular spaces. It is far less ordered than the palisade layer, and the intercellular spaces are important in gas exchange and transpiration.
What is the difference between guard cells and epidermal cells and how it relate to the difference in their functions?
epidermal cells form the outermost layer of cells of the organism. guard cells control opening and closing of any pore like in the case of stomata, epidermal cells provide protection and guard cells take care of opening and closing of stomatal pore depending on the plant's need of carbon dioxide or oxygen.
Statements is false regarding guard cells?
Guard cells are specialized cells that regulate the opening and closing of stomata in plant leaves. A false statement regarding guard cells would be that they do not contain chloroplasts; in fact, many guard cells do have chloroplasts, which contribute to their function in photosynthesis and the regulation of gas exchange. Additionally, guard cells are not involved in nutrient transport but primarily in controlling water loss and gas exchange.
Is the spongy layer of a leaf responsible for storage and gas exchange?
yes.
What is beneath the palisade layer of a leaf?
Beneath the palisade layer of a leaf is the spongy mesophyll layer. This layer contains loosely packed cells with air spaces between them that allow for gas exchange, such as the intake of carbon dioxide and the release of oxygen during photosynthesis.
On which layer of epidermis are guard cells found?
Guard cells are found on the epidermis of plant leaves, specifically within the lower epidermis. These specialized cells control the opening and closing of stomata to regulate gas exchange and water loss in the plant.
