Essays Tagged: "Phloem"
Discuss the xylem and phloem. (Structure, Changes in the Xylem of Woody Plants, Transport)
center of the tree laterally supplying materials to the living tissues in the vascular cambium and phloem. Flowering plants have a quite efficient xylem. The last act in life of some conducting cells ... ep going. That's why it's called the transpiration pull-water cohesion mechanism of xylem transport.PhloemStructurePhloem is the other transport tissue. It transports food and other organic compounds ...
Subjects: Science Essays > Biology > Plant Biology
AP Biology Essay #7 concerning Evolution, created using the grading rubric, so will be an A+
lants are much further evolved than the Algae. A few of these likely acquired traits are Xylem, and Phloem, which transport both water and food throughout the plant much like the veins in our body tra ... nt much like the veins in our body transport oxygen through veins and arteries, though Xylem unlike Phloem use passive transport to accomplish this. The cuticle, or waxy covering of the vascular plant ...
Subjects: Science Essays > Biology
Explain how translocation of sucrose occurs in the phloem as proposed by the mass flow hypothesis.
as sucrose, from the leaves to other parts of the plants where they are utilized. It occurs in the phloem sieve tube between the source end(near the leaves); where sucrose is loaded due to the proces ...
Subjects: Science Essays > Biology
Lecture notes on plant structure (download document it is in a table.)
a sticky layer)Plasmodesmata channels of communication and circulation between adjaacent plant cellsPhloem2 cells in the phloemconducting cellcompanion cellPrimary cell wallSecondary cell wall Thicker ... ylem Vascular tissue contains water-conducting cells convey water and minerals upward from the rootsPhloem Vascular tissue contains sieve-tube members that transport sugars from leaves or stage tissue ...
Subjects: Science Essays > Biology > Plant Biology
Phloem.
ids, other nitrogenous compounds and other nutrients are present in the sap (sugar solution) in the phloem vessels.The phloem transports substances using the pressure flow mechanism. This process requ ... e pressure flow mechanism. This process requires cellular energy *(ATP). Sucrose is loaded into the phloem vessels against a concentration gradient by active transport using ATP. This increases the so ...
Subjects: Science Essays > Biology
Compare the structure and function of the xylem and phloem
of xylem vessels transports water and mineral ions from the roots to all other parts of the plant. Phloem tubes transport food made in the leaves to all other parts of the plant. Neither of these sys ... se they are not as active as animals and do not need such rapid supplies of food. Neither xylem nor phloem transports oxygen as oxygen gets to a plants cell by diffusion. Both stems and roots contain ...
Subjects: Science Essays > Biology > Plant Biology
"Transport systems play an essential role in the survival of flowering plants and mammals"Discuss.
gars created by photosynthesis are actively transported from the leaves of the plant through to the phloem tissue usually in the form of sucrose to other parts of the flowering plant either for storag ... either for storage in developing fruits or to be used for energy. Sucrose is also transported down phloem tissue from sources to sinks which store the sucrose as starch for future use. Oxygen, nutrie ...
Subjects: Science Essays > Biology