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What makes a plants Stomata open?
Stomata open in response to light, when guard cells surrounding them take up potassium ions and water, causing them to swell and create an opening. Additionally, factors like high humidity, low carbon dioxide levels, and internal plant molecules can also signal stomata to open.
What is the area in a leaf containing many air spaces between cells so that carbon dioxide from the stomata can pass through?
The underside of the leaf.
Does chloroplast contain stoma?
The chloroplast is a cellular organelle that performs photosynthesis while a stoma (plural: stomata) is a two-celled structure seen on leaf surfaces. Thus, chloroplasts cannote be said to "contain stomata". Stomata are pores that regulate water evaporation and gas exchange. The two guard cells that form the stomatal pore each contain chloroplasts. However, I feel you may be confusing the term "stoma" with "stroma". "Stroma" is a term used for the liquid matrix seen inside chloroplasts - i.e. chloroplasts contain stroma. Many important photosynthetic reactions occur in the stroma and thylakoids in the chloroplast are surrounded by it.
How would you recognize the epidermis of a root versus the epidermis of a leaf?
The epidermis of a root is typically thicker and lacks stomata, whereas the epidermis of a leaf is thinner and contains stomata for gas exchange. Additionally, root epidermis may have root hairs for absorption of water and minerals, while leaf epidermis may have trichomes for protection or water regulation.
If exactly 1000000 old cells die each second how many die each minute each hour each day each week?
Each minute: 60 million cells die Each hour: 3.6 billion cells die Each day: 86.4 billion cells die Each week: 604.8 billion cells die
How many kinds of cells does the lower epidermis have?
The lower epidermis typically consists of a single layer of cells, mainly containing guard cells, subsidiary cells, and stomata. Guard cells control the opening and closing of stomata to regulate gas exchange and water loss in the leaf. Subsidiary cells provide support to the guard cells in carrying out their function.
State the function of the structures called stomata that are present in leaf epidermis?
Stomata are small pores on the leaf epidermis that regulate gas exchange, allowing plants to take in carbon dioxide for photosynthesis and release oxygen and water vapor. They also play a role in controlling water loss through transpiration and help in regulating the plant's temperature.
Are stomata and mitochondria two cells that are only found in plant?
Neither Stomata nor mitochondria are cells, stomata are found in plants as a leaf's pores and mitochondria are cell organelles that serve as the powerhouse of cells by providing energy. Anyway, yes stomata are only found in plants b/c they're a specific kind of pore, and mitochondria are one of many organelles found in plant and animal cells.
What is the gatekeeper cell?
That would be the "guard cells". The stoma is an opening on the underside of many leaves and each stoma is bordered by a pair of guard cells that open and close the pore to allow for "transpiration" (the passage of water in either gaseous or liquid form into or out of the leaf). In hot, dry weather, the guard cells close to prevent water loss. In humid weather, the guard cells allow the pore to open and water can enter.
What makes a plants Stomata open?
Stomata open in response to light, when guard cells surrounding them take up potassium ions and water, causing them to swell and create an opening. Additionally, factors like high humidity, low carbon dioxide levels, and internal plant molecules can also signal stomata to open.
What are the pores on leaves called?
The pores on leaves are called stomata. Stomata are small openings that allow for gas exchange, such as the intake of carbon dioxide and the release of oxygen and water vapor. They play a crucial role in photosynthesis and transpiration in plants.
How does CO2 get to the leaf?
(brooke,13) water is soaked up through roots & carbon dioxide is just absorbed Carbon dioxide is absorbed by the following process. There is a spongy mesophyll, a loose tissue with many air spaces between its cells. These air spaces connect with the extrerior through stomata porelike openings in the underside of the leaf that allow carbon dioxide and oxygen to diffuse into and out of the leaf.
What is the area in a leaf containing many air spaces between cells so that carbon dioxide from the stomata can pass through?
The underside of the leaf.
Why are stomata so close together?
Stomata Stomata are responsible for allowing gas exchange between the inside of the leaf and the atmosphere. A stoma is the singular and stomata is the plural form. When viewed with a microscope, they often look like coffee beans. There are more than 32 stomata in the image of the Western Sword Fern leaf, to the right. Carbon dioxide (CO₂), oxygen (O₂), and water (H₂0) commonly move in or out via the stomata. While gas exchange occurs, carbon (C) stays inside the leaf as a building block for the plant. Often, stomata are open during the day when photosynthesis is taking place and closed at night when it stops. By doing so, plants don’t lose too much water. If the stomata are open, gasses diffuse from areas of higher concentration to lower concentration. If photosynthesis is occurring the CO₂ higher concentration is outside the leaf. For H₂0 and O₂ the area of higher concentration is inside the leaf. This process is depicted in an animated clip prepared by Carnegie Institute for Science. A common misconception that students have is that the stoma’s size can keep out large molecules and just let in the little molecules like CO₂ and H₂0. A stoma is on the order of 10-6m, while a CO₂ molecule is on the order of 10-10m. If we pretend that a stoma opening is one meter across, then the CO₂ molecule would be one tenth of a millimeter in size. Each stoma is made of two guard cells. When these guard cells are swollen with water, they create an opening between them, the stomatal pore. Gas exchange occurs via the pore. When the guard cells are flaccid they lay close together, thus closing the stomatal pore. Plants that are “dicots” have kidney shaped guard cells and plants that are “monocots” have dumbbell shaped guard cells. Normally stomata open in the morning and close during the night. However, not all plants open their stomata during the day. Some plants such as cacti and succulent plants open their stomata at night and close them during the day, in order to prevent losing too much water. Stomata are usually found on both the top and the bottom of a leaf. Many plants have more stomata on the underside of the leaf. However there are exceptions, monocots, like grasses, have similar numbers on both the top and the bottom. Plants whose leaves rest on the surface of the water, like water lilies, often have very few stomata on the wet underside of their leaves. Lenticels Stomata are not the only way for plants to exchanges gases with the air. Plant roots, stems, bark, and fruits have lenticels on their outer surface. These allow oxygen in and carbon dioxide out, as the plant respires. They do not open and close, the way that stomata do. Examples of lenticels are the little spots on pears and the horizontal stripes on cherry tree bark. Stomata Printing Scientists make prints of stomata in order to easily see the surface of a leaf under the microscope. This video shows the process that we outline below. If you want to make the stomata or the locations of the stomata a surprise for your students, do not show it to the students before they begin, as it contains spoilers. The video also incorrectly states that the cells from the surface of the leaf are pulled off. Instead the nail polish is removed from the surface of the leaf. It is an impression of the leaf surface. The nail polish is just like plaster poured into a footprint in sand. Some leaves work better than others for making prints. We find that smooth, sturdy leaves work well. We run into difficulty if leaves are very delicate or are covered by lots of hair. For this reason we suggest that you try your leaves out first or let students know that the method may not work for every leaf. You can also try this method with dried leaves.
Does chloroplast contain stoma?
The chloroplast is a cellular organelle that performs photosynthesis while a stoma (plural: stomata) is a two-celled structure seen on leaf surfaces. Thus, chloroplasts cannote be said to "contain stomata". Stomata are pores that regulate water evaporation and gas exchange. The two guard cells that form the stomatal pore each contain chloroplasts. However, I feel you may be confusing the term "stoma" with "stroma". "Stroma" is a term used for the liquid matrix seen inside chloroplasts - i.e. chloroplasts contain stroma. Many important photosynthetic reactions occur in the stroma and thylakoids in the chloroplast are surrounded by it.
What produces new cells with each having half as many chromosomes as the origianal cells?
I believe it is Meiosis that produces new cells with each having half as many chromosomes as the original parent cells.
How many cells are on each leaf?
1
