What is a phloem easy definition?
phloem, plant vascular tissue that conducts foods made in the leaves during photosynthesis to all other parts of the plant. Phloem is composed of various specialized cells called sieve elements, phloem fibres, and phloem parenchyma cells.
What is phloem called?
Xylem and phloem are made of different cell types, who come together to perform a common function, hence they are called complex tissues. The xylem is composed of vessels, tracheids, xylem fibres and xylem parenchyma. Phloem is composed of sieve tubes, companion cells, phloem fibres and phloem parenchyma.
What is phloem and its function?
Phloem is the vascular tissue in charge of transport and distribution of the organic nutrients. The phloem is also a pathway to signaling molecules and has a structural function in the plant body. In plants with secondary growth, the secondary phloem is formed, and typically the primary phloem collapses.
What is phloem answer?
Phloem is living tissue, responsible for transporting food and other organic materials. Xylem consists of dead cells (parenchyma is the only living cells present in the xylem). They comprise of phloem fibres, sieve tubes, sieve cells, phloem parenchyma and companion cells.
How do you use phloem in a sentence?
The outer ring of the stem contains all the functional tissue, including xylem, cambium, phloem, supporting tissues, and epidermis. The cambium produces phloem tissue to the outside and xylem tissue to the inside.
Which statement about phloem is true?
The correct answer is Phloem transports photosynthetic products. Phloem is a living tissue in vascular plants that conducts the soluble organic compounds synthesized downwards from the leaves during photosynthesis. Hence option 2 is correct.
What is phloem class 10th?
– Phloem: It is a living tissue that carries food materials, (in particular, sucrose, a sugar), from the place it is available (source) to the places where it is needed (sink).
What is an example of phloem?
Phloem is the tissue in plants that transport food to the parts of the plant where it needs to go. An example of the phloem is the tissue in plants that distributes the sugar that plants eat.
Are phloem cells living or dead?
Phloem consists of living cells. The cells that make up the phloem are adapted to their function: Sieve tubes – specialised for transport and have no nuclei .
Why do phloem have end walls?
The phloem is specialised to transport food products to parts of the plant where they are needed. Phloem vessels are made up of columns of living cells. The end walls of phloem cells contain small holes to allow food products to move up and down the phloem vessels.
What is phloem?
Definition, Characteristics, Structure, Facts & Function – Biology Reader Phloem is a complex tissue of a plant, first introduced by a scientist Nageli in 1853. It is a part of the plant’s vascular system that involves the translocation of organic molecules from the leaves to the different parts of plants like stem, flowers, fruits and roots.
How does phloem help in translocation of food?
Therefore, phloem helps in the translocation of food from the source (Leaves) and sinks it to the other parts that are used up for the plant’s growth and other activities.
What happens when the phloem is damaged?
When the phloem is damaged, the P-protein, which is produced in the sieve element lumen, accumulates on the sieve plate to prevent loss of nutrient rich sap. Biologydictionary.net Editors.
How does the phloem move photoassimilates?
Through the system of translocation, the phloem moves photoassimilates, mainly in the form of sucrose sugars and proteins, from the leaves where they are produced by photosynthesis to the rest of the plant. The sugars are moved from the source, usually the leaves, to the phloem through active transport.