What are the cross section of a leaf?
A cross section of a leaf shows that it is a complex organ built of several different kinds of specialized tissues. The tissues, in turn, are built of specialized cells, and the cells, of organelles. Epidermis covers the upper and lower surfaces of the leaf.
What are the label parts of the leaf?
Key Points
- Each leaf typically has a leaf blade ( lamina ), stipules, a midrib, and a margin.
- Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves.
What are the 4 layers of a leaf?
The four layers of a typical dicot leaf are:
- Spongy layer.
- Palisade layer.
- Upper epidermis.
- Lower epidermis.
What are the five internal structure of a leaf?
Answer: Leaf part contains cuticle present in the upper layer which protects plants from drying out by reducing of water loss, upper epidermis consists of a single layer of cells covered by cuticle which contains pores that allow gas and water molecules to pass, Palisade mesophyll present just beneath the epidermis.
What are the five layers of a leaf?
Leaves are complex organs consisting of many different cell types (see Figure 1) including the epidermis, palisade mesophyll layer, spongy mesophyll layer, and vascular bundles. Figure 1: Cross-section of a dicot leaf showing its various tissues and anatomy.
What are the two types of leaf blade?
Dentate blades have teeth pointing outward and are large. Crenate blades have rounded or scalloped teeth. Undulate blades form a wavy line on their edge that bends slightly inward and outward in succession. Sinuate blades are wavy.
What is mesophyll cell?
mesophyll. (Science: plant biology) tissue found in the interior of leaves, made up of photosynthetic (parenchyma) cells, also called chlorenchyma cells. Consists of relatively large, highly vacuolated cells, with many chloroplasts.
How do you draw an exam diagram?
Sketch out your diagram in pencil first. If you have to finish the exam in pen, still draw in pencil first, then fill your diagram in with pen when you are confident with your drawing. This makes it easier to correct mistakes. Remember to use a ruler for straight lines, particularly if you are drawing a graph.
Can you see cells on a leaf?
Like any other multicellular living thing, leaf structure is made up of layers of cells. Using a microscope, it’s possible to view and identify these cells and how they are arranged (epidermal cells, spongy cells etc). To do this a compound microscope is required given that it allows for higher magnification.