Dicot and monocot leaf anatomy - SlideShare

Among the Anthophyta, monocots and dicots are easily distinguished. Generally in monocots, the leaf veins (vascular bundles) are parallel; in dicots they are branched. Flower parts in monocots are based on multiples of three and in most dicots on multiples of four or five.

Dicot and monocot leaf anatomy ..

Before we get into the layers and functions of the dicot leaf, ..

Comparing Monocot and Dicot - mrsrosales …

The arrangement of vascular tissue differs in monocot and dicotplants, as you can see by comparing the two previous images with thetwo that follow below.

Comparison between dicot leaf and monocot leaf

Campbell Biology, 11th ed. Chapter 35 for tissues and leaf structure. See also fig. 30.16 and 30.17 for a comparison of monocots and eudicots.


Plant Structure & Function - University of Waikato

Dicot leaves are much like fern leaves in general structure. The upper and lower epidermis are covered with a waxy cuticle to prevent water loss. The mesophyll consists of a palisade layer of tall cells just under the upper epidermis, and chains of spongy mesophyll cells with air spaces between them in the lower part of the leaf. The tall palisade cells are packed with chloroplasts and are the site of most of the photosynthesis in the leaf; they are located in the upper part of the leaf where sunlight penetrates most fully. Spongy mesophyll contains air for gas exchange with cells of the leaf. Carbon dioxide from air is the source of carbon for synthesis of carbohydrates, and oxygen gas is a waste product of photosynthesis.

The Science Behind Holganix: Monocots vs Dicots: What …

stem tip. l.s. (dicot). This is a longitudinal section through a common ornamental house plant. You can distinguish the central stem and the leaves branching off it. The very tip of the stem is embryonic tissue called the apical meristem; as the plant grows, it differentiates into stem, leaves, and flowers. Meristem present in the axils of the leaves (between the leaf and stem, above the leaf) forms axillary buds. Cells of the apical meristem secrete a hormone, auxin, that suppresses growth of the axillary buds; when the apical meristem is removed, the hormonal control is removed and the axillary buds can grow into new stems. In some areas you can distinguish xylem cells that are supported by a coil of thickened wall that is stained pink; this coil around the cell is somewhat like the cartilage rings that hold your trachea (windpipe) open.

Thylakoid Membrane in Photosynthesis: Definition, …

Observe the whole leaves of various land plants. While these leaves show a variety of shapes, they all do more or less the same job. Some of the differences in shape can be understood in terms of the conflicting requirements that leaves face: absorbing light, exchanging gases, avoiding dehydration, avoiding predation. Break off a small piece of a leaf and look at it under the microscope; you should be able to identify dermal, ground, and vascular tissue. Which of the leaves in lab are simple, and which are compound? Within the flowering plants (angiosperms), there are two large groups with different styles of leaves. eudicots (roses, for example) have leaves with a netlike, branching system of veins. Monocots (grasses, for example) have parallel veins. Later in this lab you’ll see more differences between eudicots and monocots. See Campbell, p. 603 for a summary of monocots and eudicots.

Garden - How To Information | eHow

Syringa leaf x.s. (dicot). Identify the upper and lower epidermis, the palisade mesophyll, and the spongy mesophyll. Pairs of small cells in the lower epidermis that have a space between them control the stomata, the openings between air outside the leaf and air in the spaces in the spongy mesophyll. The central rib of a leaf is its main vascular bundle, and it gives rise to many side branches. Identify xylem and phloem, the tissues that transport water and dissolved nutrients respectively throughout the plant. Xylem cells in cross section are large with thick walls that are probably stained pink. Phloem consists of tiny, thin-walled cells below the xylem; it is probably stained green. Which is towards the top of the leaf, and which is toward the bottom? Why? These vascular cells are surrounded by supporting tissue, some of which is hardened as sclerenchyma to give rigidity.