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Stem and leaf diagrams are formed by splitting the number into two parts, the ‘stem’ and the ‘leaf. For example: In the number 36, the tens would form the stem and the units the leaf. In the ...
- Leaf Structure
The structure of a leaf has adaptations so that it can carry...
- Leaf Structure
May 9, 2023 · Structure of the Leaf. Plant leaves have complex structures with layers of different tissues containing specially adapted cells. The table below describes the different structures in a leaf and their functions. Leaf Structures Table. Diagram showing the cross-section of a leaf. The specialised cells in leaves have adaptive features which allow ...
The structure of a leaf has adaptations so that it can carry out photosynthesis close photosynthesis A chemical process used by plants to make glucose and oxygen from carbon dioxide and water ...
- Overview
- Leaf Anatomy
- Blade Parts
- Petioles & Sessile Leaves
- Stipules
- Compound Leaves
- Leaf Arrangement
This article describes the anatomy of a leaf in angiosperms, including its parts (blade and petiole), variations, stipules, compound leaves, and arrangement. The article includes diagrams and photos to help illustrate the concepts discussed.
A leaf can be identified by where it emerges from the node, and is generally composed of a blade and petiole. The blade is usually flat and photosynthetic, while the petiole attaches the blade to the main stem of the plant. Some leaves are sessile (lacking a petiole). Some plants have paired appendages called stipules at the base of their leaves. C...
In eudicots, leaf blades have netted venation with a central midvein and smaller veins branching off from there; in monocots, veins run parallel to each other without any true midvein.
Most leaves have a stem that attaches its blade to rest of plant called petiole but some do not have one so they are directly attached to plant stem which are known as sessile leaves.
Some plants will have paired appendages found at base of leaf which are called stipules that can look like leaf or take on different forms such as spines or tendrils .
A compound leaf looks like branch with leaflets emerging from it but these leaflets don't emerge from node unlike axillary buds; compound leave may be palmate or pinnate based on how leaflets attach to rachis/petiole tip .
Angiosperms determine arrangement by counting number of leaves per node- alternate has 1 per node , opposite has 2 per node , whorled has 3+ per node encircling stem .
raw materials: > carbon dioxide > water. energy > light. accessory > chlorophyll. By means of labelled arrows drawn on the diagram above, show the pathway taken by each of the two raw materials to a cell in the centre of the leaf. Show with another labelled arrow the direction the energy comes from.
Sep 24, 2024 · Diagram showing the cross-section of a leaf. How photosynthesising cells obtain carbon dioxide. Pathway of carbon dioxide from the atmosphere to chloroplasts by diffusion: atmosphere → air spaces around spongy mesophyll tissue → leaf mesophyll cells → chloroplast. Leaf Structure Table.
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Feb 17, 2023 · 1. Epidermis – The leaf’s outer (above and below) layer. 2. Mesophyll – The inner layer sandwiched between two epidermis layers. 3. Vascular – Located within the mesophyll layer. Let us now discuss the internal structure of a leaf in detail, specifically how the three cell types are arranged in a leaf in different layers along with its ...
