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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.
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∙ 11y ago
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What is closest to the center of a woody stem?
Vascular cambium
What is the difference between vascular cambium and cork cambium?
The vascular cambium adds to secondary xylem and secondary phloem while the cork cambium gives rise to cork and secondary cortex. The vascular cambium is a remnant of the apical meristem while the cork cambium is a true secondary meristem which develops outside the vascular tissues.
What is the function of the cambium?
The cambium is the layer of actively dividing cells between the xylem and phloem tissues of plants. It is responsible for the secondary growth of plants.
What tissues make up wood and bark?
phellem(cork), phellogen(cork cambium), phelloderm(secondary cortex), primary phloem and secondary phloem constitutes BARK
What provides horizontal transport of material in stems and roots?
the secondary phloem
What is closest to the center of a woody stem?
Vascular cambium
What term describes wood secondary xylem epidermal tissue primary vascular tissue or secondary phloem?
Secondary xylem
What tissue is made up of phloem and xylem?
Bark makes up the phloem tissue and a cork cambium that protects the stem.
What part of a plant produces secondary growth?
Meristematic tissue (vascular cambium) produces secondary growth. In plant stems, this serves to increase the diameter, and it forms between the primary xylem and phloem.
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.
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 the difference between the cells that compose xylem and phloem tissue?
the cells of phloem are the only ones with cytoplasm
Where is the location of cambium in plant?
It is located in the vascular bundles between the primary xylem (wood) and primary phloem (bast) tissues.
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.
What makes new xylem and phloem?
vascular cambium makes secondary xylem and phloem!!
What is the difference between vascular cambium and cork cambium?
The vascular cambium adds to secondary xylem and secondary phloem while the cork cambium gives rise to cork and secondary cortex. The vascular cambium is a remnant of the apical meristem while the cork cambium is a true secondary meristem which develops outside the vascular tissues.
What is the function of the cambium?
The cambium is the layer of actively dividing cells between the xylem and phloem tissues of plants. It is responsible for the secondary growth of plants.
