Web5 sep. 2024 · 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. It is typically composed of three cell types: sieve elements, parenchyma, and sclerenchyma. WebPhloem sieve-tube elements have reduced cytoplasmic contents, and are connected by a sieve plate with pores that allow for pressure-driven bulk flow, or translocation, of phloem sap. Phloem is comprised of cells called sieve-tube elements. Phloem sap travels through perforations called sieve tube plates.
Topic 9: Plant Quiz Flashcards Quizlet
WebPalisade mesophyll cells are tall and have large number of closely packed chlorophyll molecules to absorb maximum light. Most photosynthesis takes place in the palisade cells. This is followed by spongy mesophyll cells. Xylem and phloem are the conducting elements of plants, not involved in carrying out photosynthesis. WebOk, im not very good myself on this topic but here goes:-The companion cells use ATP to carry out active processes such as loading the sugars (mainly sucrose) into the sieve … cht tax_local server
What are the adaptations of a phloem cell? - Answers
Web18 nov. 2015 · Muscle cells are specialized to contract and relax. They have several unique protein molecules (actin, myosin, etc.) that interlock and are responsive to the local concentration of calcium. When ... WebA substance called lignin strengthens the cell walls of xylem cells. Phloem cells. The phloem is specialised to transport food products to parts of the plant where they are … Web31 mrt. 2024 · In vascular plants, we have vascular tissues (complex conducting tissues) that are formed by different types of cells. Xylem and Phloem are the primary components of this tissue. These vascular tissues are arranged in vascular bundles. So basically, these vascular bundles contain xylem, phloem and some protective cells as well. cht therapie