What is the path difference for interference?
The wave from Source 2 (S2) travels a distance of 7 wavelengths to reach the same point. The difference in distance traveled by the two waves is one full wavelength. That is, the path difference is 1 λ. When the path difference is one full wavelength, a crest meets a crest and constructive interference occurs.
What are leaves without petiole called?
Leaves that do not have a petiole and are directly attached to the plant stem are called sessile leaves. Leaves also have stipules, small green appendages usually found at the base of the petiole.
What is the function of petiole in short?
A petiole attaches the leaf to the stem and contains vascular tissue that provides a connection from the stem to permit sap to enter the leaf and the products of photosynthesis (carbohydrates) to be transported from the leaf to the rest of the plant.
Which tissue is present in petiole?
Collenchyma tissue
What is petiole and lamina?
Petiole- Petiole is the stalk which attaches the leaf blade ( lamina) to the stem. The petiole is the transition between the stem and the leaf blade. Lamina- The lamina is the expanded portion or blade of a leaf and it is an above-ground organ specialised for photosynthesis.
What is the function of Lamina?
The lamina propria serves several functions in these membranes, from holding the epithelial cells together to allowing the passage of blood vessels and nutrients. The lamina propria also serves as an important physical barrier which stops unwanted materials and organisms from gaining access to the body.
What is lamina and petiole draw the diagram?
Petiole: Petiole is the long, thin, stalk that links the leaf blade to the stem. Lamina: Also known as leaf blade. It is the green, flat surface of the leaves. It consists of a small branched vein and veinlets.
What is Stipule and petiole?
In botany, a stipule is an outgrowth borne on either side (sometimes just one side) of the base of a leafstalk (the petiole). In some older botanical writing, the term “stipule” was used more generally to refer to any small leaves or leaf-parts, notably prophylls.
What is the other name of leaf stalk?
the stalk attaching a leaf to a stem or branchTechnical name: petiole.
What is petiole do all leaves have petioles?
Not all leaves have petioles. Some are, instead, attached directly to the plant stem. Leaves that do not have petioles, such as those of the broomrape family, are called sessile leaves. Yet another form of the petiole is the rachis—a continuation of the petiole which attaches compound leaves to their plant stems.
Is celery a petiole?
Celery stalks are the petioles (“stalks”) of compound leaves. They are not stems, in spite of widespread misrepresentation in elementary school lesson plans. They may look like stems to some people because they are thick and fleshy and have prominent veins running lengthwise through them.