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Primary phloem
1. . Derived from procambium of apical meristem.
2. . District protophloem and metaphloem elements.3 Sieve tubes long and narrow.
3. Less or no development of phloem parenchyma.
4. Phloem fibres on the outer part.
Secondary phloem
1. . Derived from vascular cambium.
2. . No clear demarcation between protophloems and metaphloems.
3. Sieve tubes short and wide.
4. .Well developed and abundant phloem parenchyma.
5. . Phloem fibers among the phloem parenchyma.
What else can I help you with?
What is closest to the center of a woody stem?
Vascular cambium
Leaves dont have secondary xylem and phloem why not?
Leaves are designed to last only a short time so a secondary xylem and phloem supply is not needed. These chemicals offer a strong support system that is not needed in the leaves, just the trees.
The vascular system of a three-year-old eudicot stem consists of?
3 rings of xylem and 1 of phloem
What is the function of the cambium?
The cambium is a layer of cells in plants that is responsible for lateral growth, producing new xylem and phloem cells. It plays a key role in secondary growth, increasing the width of stems and roots.
Where is most of the plant's new xylem and phloem produced?
Most of the plant's new xylem and phloem are produced in the vascular cambium, which is a thin layer of meristematic cells located between the xylem and phloem in the stem and root. This region is responsible for secondary growth in plants, leading to the production of new xylem towards the inside and new phloem towards the outside.
Is wood from a tree secondary or primary phloem?
Wood is primarily composed of secondary xylem, while phloem is the vascular tissue responsible for transporting nutrients. Trees produce primary phloem during their early growth stages, but as they mature, they develop secondary phloem through the activity of the vascular cambium. Therefore, while wood itself is not phloem, trees have both primary and secondary phloem for nutrient transport.
What is precambium?
The precambium is a layer of meristematic tissue found between the primary xylem and phloem in vascular plants. It is responsible for the production of secondary vascular tissue in the form of secondary xylem (wood) and secondary phloem.
What structures does this vascular cambium produce and where are they produced?
The vascular cambium produces secondary xylem (wood) and secondary phloem, which are formed in a lateral direction. These structures are produced between the primary xylem and primary phloem in stems and roots of plants. The secondary xylem is produced toward the interior, while the secondary phloem is produced toward the exterior, contributing to the increase in girth of the plant.
What term describes wood secondary xylem epidermal tissue primary vascular tissue or secondary phloem?
Secondary xylem
What part of a plant produces secondary growth?
The vascular cambium, a layer of cells between the xylem and phloem tissues in the stem, is responsible for producing secondary growth in plants. This results in the thickening of the stem and roots as new layers of xylem and phloem are added.
What is closest to the center of a woody stem?
Vascular cambium
Leaves dont have secondary xylem and phloem why not?
Leaves are designed to last only a short time so a secondary xylem and phloem supply is not needed. These chemicals offer a strong support system that is not needed in the leaves, just the trees.
Where is the location of cambium in plant?
The cambium is a layer of actively dividing cells located between the xylem and phloem in vascular plants, mainly in the stems and roots. Its primary function is to produce new cells for secondary growth, resulting in the thickening of the plant body.
Where is the cambium located in the plant?
It is located in the vascular bundles between the primary xylem (wood) and primary phloem (bast) tissues.
The vascular system of a three-year-old eudicot stem consists of?
3 rings of xylem and 1 of phloem
Why is the difference between xylem and phloem important in a plant?
There is structural difference between xylem and phloem. This is because their function is also different. Had there been no difference in structure, how these could have performed different function?
What is meat by primary and secondary growth in vascular plants?
The primary growth in vascular plants takes place with the differentiation of vascular tissue from parenchymatous cells and the secondary growth takes place when the intra-vascular and inter vascular cambium adds to the secondary phloem and secondary xylem.
