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What are nucleated cells of the phloem which aid in the physiology of sieve tubes called?
The nucleated cells in the phloem that aid in the physiology of sieve tubes are called companion cells. These cells are closely associated with sieve tube cells and provide metabolic support, such as loading and unloading of nutrients, for the sieve tubes.
What is the difference between companion cell and sieve tubes?
Companion cells have the structure of a 'normal' plant cell. Sieve tubes don't have nuclei, tonoplasts and ribosomes. Also there are no sieve plates in a companion cell, whereas there are in sieve tubes.
What is the structure of the Phloem?
Phloem is composed of sieve elements and companion cells. Each sieve element has a companion cell that provides ATP and other necessary support to the sieve element. In addition to this there are sieve plates that separate sieve cells.
Group of similar cells that perform a similar function?
tissues are group of cell that perform a specific similar function.
What two cell types make up xylem amd phloem?
Xylem is composed of tracheary elements (such as vessels and tracheids) and fibers. Phloem is composed of sieve tube elements and companion cells.
Which cell found in phloem tissue has a nucleus?
Companion cells found in phloem tissue have a nucleus. These cells are closely associated with sieve tube elements and play a role in supporting their function by providing energy and nutrients.
What are the constituents of phloem?
The phloem consists mainly of sieve tubes, companion cells, phloem fibers, and parenchyma cells. Sieve tubes are responsible for transporting sugars and other organic compounds, while companion cells support sieve tube function. Phloem fibers provide structural support, and parenchyma cells store nutrients.
What is the definition of companion cells in stems?
Companion cells are specialized parenchyma cells found in the phloem of plant stems. They are closely associated with sieve tube elements and help support their function by providing nutrients and maintaining cellular processes. Companion cells play a crucial role in the transport of organic compounds through the phloem.
What is the shape of companion cells?
Companion cells are typically elongated and have a dense cytoplasm. They are closely associated with sieve elements in the phloem and play a crucial role in supporting the function of these sieve elements by providing them with nutrients and energy.
Which of this following froms an important component of phloem tissue?
Sieve tubes and companion cells are important components of phloem tissue in plants. Sieve tubes are responsible for transporting sugars and other organic compounds, while companion cells support sieve tube function by providing energy and resources.
How is sieve tube different from companion cells?
The sieve tube elements are specialized elongated cells in the phloem that connect end to end forming a tube. The main function of this tube is to transport nutrition in the form of carbohydrates. Sieve cells have no nucleus, ribosomes and cytoplasm, meanin they cannot carry out primary metabolic activities. The companion cells, which are closely associated with the sieve tube elements, carry out the their metabolic functions.
How are mature phloem cells controlled if they lack a nucleus?
Mature phloem cells are regulated by surrounding companion cells, which supply them with necessary proteins and nutrients. These companion cells are connected to the phloem cells by plasmodesmata, allowing for communication and control despite the phloem cells lacking a nucleus.
What are phloem vessels made of?
Phloem vessels are made of living cells, including sieve tube elements and companion cells. Sieve tube elements are elongated cells that form the main transport conduits, while companion cells provide metabolic support to the sieve tube elements. Together, these two types of cells make up the structure of phloem vessels.
What does ''specialization of cell '' mean?
when cells are designed to do a specific function
Do companion cells have nuclei?
for example phloem .... doesnt have a nucleus ... and it needs a nucleus to survive ... thats why they have a companion cell which have a nucleus for them ...if u try to separate the companion cell from the phloem the phloem will die after some time
What the function of guard cells?
the function of guard cells are that they control the opening and closing of the stoma
What is the function of ciliates cells in the lining of the oviduct?
What is the function of the ciliates cells in the lining of the oviduct
