What is the Difference Between Stipule and Axillary Bud?

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The main difference between a stipule and an axillary bud lies in their structure and function:

  • Stipule: A stipule is a leaf-like structure present at the base of a leaf. They can develop into tendrils, hairs, spines, or scales. Stipules have various morphologies and can appear as glands, scales, hair, or spines. They typically protect the bud or the next leaf that is about to grow.
  • Axillary Bud: An axillary bud is a bud that presents between the stem and leaf petiole. These buds contain young shoot tissues, and the shoot apex controls the growth of axillary buds. Axillary buds develop into branches or flowers.

In summary, stipules are leaf-like structures found at the base of leaves, while axillary buds are small buds located in the axil (the angle between the leaf and the stem). Stipules can develop into various structures like tendrils, spines, or hairs, while axillary buds develop into branches or flowers.

Comparative Table: Stipule vs Axillary Bud

Here is a table comparing the differences between stipules and axillary buds:

Feature Stipule Axillary Bud
Definition A stipule is one of the two leaf-like appendages present at the base of the leaf. An axillary bud is a small bud present in the angle between the stem and the leaf petiole.
Location Stipules are found at the base of the leaf petiole, below the leaf. Axillary buds are located in the angle between the stem and the leaf petiole.
Function Stipules may develop into tendrils, hairs, spines, and scales, etc.. Axillary buds may develop into branches or flowers and contain young shoot tissues.
Growth Stipules are flat leafy structures. Axillary buds elongate visibly only if apical dominance is removed, the bud has matured, and the environmental conditions for growth are suitable.

In summary, stipules are leaf-like appendages found at the base of the leaf, while axillary buds are small buds located in the angle between the stem and the leaf petiole. Stipules may develop into various structures like tendrils, hairs, spines, and scales, whereas axillary buds typically develop into branches or flowers.