WebThe middle area of a leaf also contains vascular bundles composed of xylem and phloem. The main function of xylem bundles is to transport water and minerals to the leaves. This water is then used in the process of photosynthesis. The other type of bundle called the phloem transports the photosynthetic products produced in the leaf to the other ... WebThe cell cannot function without certain organelles and must rely on the organelles of the companion cells. The companion cell is responsible for all metabolic functions of the sieve tube member. The companion cell is essential for the survival of the sieve tube member. This will cause the member to cease phloem function and kill the plant.
8th-bio-ch-1-notes class8 PDF Tissue (Biology) Osmosis - Scribd
WebThe cells that make up the phloem are adapted to their function: Sieve tubes – specialised for transport and have no nuclei. Each sieve tube has a perforated end so its cytoplasm … davidson county public library jobs
Xylem - Definition, Types and Function Biology …
WebPlant vasculature consists of two major conductive cell types, xylem tracheary elements and phloem sieve elements (SEs). Both cell types undergo a highly specialized … WebXylem veasels are dead elongated cells which have a tube like structure with open ends . Their cell walls are lined with lingin with small pits in unlifnified regions. -dead so contain no cytoplasm. - no end walls/open ends allow for an uninterrupted flow of water/ions. -lined with either spiral or rings of lignin for structural support. WebExplain how xylem vessels are adapted to carry out their functions in plants. 4 marks. Xylem cells have no cytoplasm or end walls, meaning they form a tube through which water can pass freely to allow water transport. Lignin strengthens the cell walls, helping to support the plant. Answered by Tilly H. • Biology tutor. gaston richmond wikipedia