Question

Each stoma consists of two guard cells (kidney shaped), each guard cell contains chloroplast and nucleus.​

Answer 1

Answer:

kidney-shaped cells called guard cells. ... Each guard cell has one nucleus and many chloroplasts.

kidney-shaped cells called guard cells. ... Each guard cell has one nucleus and many chloroplasts. The stomata are apertures in the epidermis, each bounded by two guard cells. In Greek, stoma means “mouth,” and the term is often used with reference to the stomatal pore only.

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Answer 2

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The epidermis is formed of single continuous layered cells. It covers without any intercellular space and protects all parts of the plant. Small pores, called stomata, are present on the leaf, and help in the exchange of gases and water. ... It checks the loss of water, mechanical injury and invasion by parasitic fungi.

It forms a boundary between the plant and the external environment. The epidermis serves several functions: it protects against water loss, regulates gas exchange, secretes metabolic compounds, and (especially in roots) absorbs water and mineral nutrients.

However, in plants that grow in very hot or very cold conditions, the epidermis may be several layers thick to protect against excessive water loss from transpiration. A waxy layer known as the cuticle covers the leaves of all plant species. The cuticle reduces the rate of water loss from the leaf surface.