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Difference Between Exogenous and Endogenous Budding

May 18, 2020 Posted by Dr.Samanthi

The key difference between exogenous and endogenous budding is that in exogenous budding, the new organism or the bud develops on the surface of the mother parent and then matures and detaches from it while in endogenous budding, the new organism or the bud develops inside the mother cell.

Budding is a type of asexual reproduction from which a new offspring develops attached to the mother parent. It occurs from an outgrowth or a bud. Generally, a bud develops on the parent cell and extends to the outside. Then it matures and detaches from the mother parent, becoming an independent organism. Thus, this type of budding is called exogenous budding. But, in some organisms, internal budding is also seen. Here, a bud or a daughter cell is produced inside the mother cell. Therefore, this is called endogenous budding.

CONTENTS

1. Overview and Key Difference
2. What is Exogenous Budding
3. What is Endogenous Budding
4. Similarities Between Exogenous and Endogenous Budding
5. Side by Side Comparison – Exogenous vs Endogenous Budding in Tabular Form
6. Summary

What is Exogenous Budding?

Exogenous budding is a type of asexual reproduction shown by certain living organisms. In this process, a new organism develops as a form of an outgrowth or a bud on the surface of the mother cell. It develops externally on the mother parent. Hence, it is known as exogenous budding. In fact, this is the usual form of budding.

Difference Between Exogenous and Endogenous Budding

Figure 01: Exogenous Budding

While attached to the mother cell, the new organism matures. Once it becomes fully matured, it detaches from the parent and behaves as an independent organism. Exogenous budding is commonly seen in hydra, obelia, scypha, and yeast.

What is Endogenous Budding?

Endogenous budding is another way of asexual reproduction. In endogenous budding, new organisms or buds develop within the mother organism or cell. Here, the bud develops inside the parent. Hence, it is known as endogenous budding.

Key Difference - Exogenous vs Endogenous Budding

Figure 02: Endogenous Budding

For example, this type of budding is seen in sponges that belong to phylum Porifera. Spongilla is a genus of sponges that shows endogenous budding. Inside the mother spongllia, several buds called gemmules form and they mature inside. Then they come out from the central cavity via an opening and become independent individuals.

What are the Similarities Between Exogenous and Endogenous Budding?

  • Exogenous and endogenous budding are two forms of budding seen in living organisms.
  • They are types of asexual reproduction methods.
  • Furthermore, the offspring developing from these two forms are identical to their mother parent.
  • Also, both take place as a result of mitotic cell division.

What is the Difference Between Exogenous and Endogenous Budding?

Exogenous and endogenous budding are two types of budding which are asexual reproduction methods. The bud forms externally on the surface of the mother parent in exogenous budding. In contrast, the buds form internally within the mother parent in endogenous budding. So, this is the key difference between exogenous and endogenous budding. External budding is a synonym for exogenous budding while internal budding is a synonym of endogenous budding.

Hydra, Scypha and Obelia are several example organisms that show exogenous budding while spongllia and other sponges are example organisms that show endogenous budding.

Below infographic summarizes the difference between exogenous and endogenous budding.

Difference Between Exogenous and Endogenous Budding in Tabular Form

Summary – Exogenous vs Endogenous Budding

Budding is a type of asexual reproduction. Buds can arise in or on the body surface. They arise as a result of mitotic cell division. Hence, offspring is genetically identical to the parent. If the budding occurs on the surface of the mother cell, we call it exogenous budding. In contrast, if the budding occurs inside the mother parent body, we call it endogenous budding. This is the key difference between exogenous and endogenous budding. Hydra and yeast show exogenous budding commonly while sponges show endogenous budding.

Reference:

1. “Reproduction In Animals: Asexual And Sexual (With Diagram) | Zoology”. Zoology Notes, 2020, Available here.

Image Courtesy:

1. “Figure 43 01 02” By CNX OpenStax – (CC BY 4.0) via Commons Wikimedia
2. “Image from page 253 of “The Cambridge natural history” (1895)” By Internet Archive Book Images (No known copyright restrictions) via Flickr

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Key Difference Between Male and Female UrineDifference Between Male and Female Urine Difference Between Organ and Organelle Difference Between Feral and Wild Difference Between Gestational Age and Fetal Age Difference Between Crossbreeding and GMDifference Between Crossbreeding and GM

Filed Under: Biology

About the Author: Dr.Samanthi

Dr.Samanthi Udayangani holds a B.Sc. Degree in Plant Science, M.Sc. in Molecular and Applied Microbiology, and PhD in Applied Microbiology. Her research interests include Bio-fertilizers, Plant-Microbe Interactions, Molecular Microbiology, Soil Fungi, and Fungal Ecology.

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