Why does a root hair cell contain mitochondria? Root hair cells Plants absorb water from the soil by osmosis Osmosis is the spontaneous net movement of solvent molecules through a semi-permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.Osmosis
Why do root hair cells contain high concentrations of mitochondria?
Root hair cells contain high concentrations of mitochondria to provide the energy needed in active transport. Found this useful? Give kudos! An experienced and enthusiastic tutor with a PhD in Molecular Biology Interested in booking a 1-1 lesson with me?
What is the function of root hair cells?
Root hair cells Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. They also contain lots of mitochondria, which release energy from glucose during respiration in order to provide the energy needed for active transport.
Why are root hair cells so long and thin?
They are long and thin so they can penetrate between soil particles and they have a large surface area for absorption of water. Water passes from the soil water to the root hair cell's cytoplasm by osmosis. This happens because the soil water has a higher water potential than the root hair cell cytoplasm: Root hair cells - Higher
Why does the root hair cell have a higher water potential?
This happens because the soil water has a higher water potential than the root hair cell cytoplasm: To maintain the concentration gradient and so the constant movement of water into the root hair cell by osmosis, the root hair cell actively transports mineral salts into the cell.
Do plant root cells have mitochondria?
The short answer is yes. Mitochondria is found in plants. Plant and animal cells both have mitochondria the only difference being plant cells additionally have chloroplasts.
Why do root hair cells contain ATP?
Because active transport moves ions against the concentration gradient into the root hair cells, energy is needed. The energy is supplied in the form of ATP (adenosine triphosphate).
Why does a root hair cell not need chloroplasts?
The intake of water and nutrients from the rhizosphere is the primary function of root hairs. Because most plants' roots are underground and not exposed to light, root cells lack chloroplasts. Photosynthesis, which requires light, necessitates the presence of chloroplasts.
What is special about a hair root cell?
Root hair cells are specialised (to perform a specific function). Their structure allows the plant to absorb more water. They also allow a plant to take in the minerals it needs to survive.
Why do muscle cells have lots of mitochondria?
Muscle cells are assiciated with a large number of mitochondria as they require more ATP (energy) to function than other cells. They need this because of their frequent contraction and relaxation, which requires more ATP than average cells.
What is in a mitochondria?
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).
Why would a root hair cell and an onion bulb cell contain no chloroplasts?
The clear epidermal cells exist in a single layer and do not contain chloroplasts, because the onion fruiting body (bulb) is used for storing energy, not photosynthesis. Each plant cell has a cell wall, cell membrane, cytoplasm, nucleus, and a large vacuole.
Which organelle is abundant in root hair?
The cytoplasm is made up of water, salts and organic molecules. It is important as it suspends the cell organelles within it. All cells need energy to survive. Root hair cells are alive and therefore need energy, which is why root hair cells contain many mitochondria in them.
How can root hair help organism to survive?
Root hairs act like a sponge underground. They absorb nutrients and water which are sent through the tip of the plant's root. The fact that there are so many root hairs on each root increases the amount of water and nutrients the plant can absorb from the soil.
How does the structure of the root hair cell help it to function?
Root hair cells have a very large surface area due to them being very long and having hair like projections. This allows more active transport of mineral ions to take place so the plant is able to take in as many important mineral ions as possible e.g. nitrates.
What is the difference between a plant cell and a root hair cell?
Answer. As a leaf cell is a plant cell contains chloroplasts for photosynthesis which the root hair cell does not have, leaf cell also contains larger vacuoles and the presence of a cell wall.
How are root hair cells adapted for osmosis?
Plants absorb water from the soil by osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis. Another adaptation that they have is root hair cells have a large permanent vacuole. This speeds up the movement of water by osmosis.
Why do root hair cells use energy?
Root hair cells - Higher. To maintain the concentration gradient and so the constant movement of water into the root hair cell by osmosis, the root hair cell actively transports mineral salts into the cell. This means it uses energy - these cells are actively respiring in order to move mineral salts from low concentration outside ...
How does water pass through the root hair cell?
Water passes from the soil water to the root hair cell's cytoplasm by osmosis. This happens because the soil water has a higher water potential than the root hair cell cytoplasm: Solution. Water concentration. Concentration of dissolved solutes. Soil water.
Why do plants need transport?
Plants require a transport system to deliver raw materials for photosynthesis to the leaves and to deliver the sugar made to other parts of the plant for use or storage.
