Difference between Adnate and Connate - Testbook

Last Updated on Jul 31, 2023
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Adnate and connate are two botanical terms that describe the fusion of different and similar organs respectively. The following sections and table will provide a more detailed comparison of these two terms.

Defining Adnate

Adnate organs refer to different organs that have fused together. This fusion process is known as adnation. Common examples of adnation can be observed in flowering plants where organs such as stamens, petals, and sepals fuse together. For instance, in a sunflower, the stamens are adnate to the petals.


Defining Connate

Connate organs, on the other hand, are similar organs that have fused together. This fusion process is known as connation. An example of connation can be seen when stamens fuse together or when the sepals of a flower fuse, a condition known as synsepalous. The fusion of petals, known as sympetalous, can be observed in flowers like rose.

Comparing Adnate and Connate

Adnate

Connate

Description

Refers to different organs that have fused together.

Refers to similar organs that have fused together.

Type of Organ

Involves the fusion of different organs.

Involves the fusion of similar organs.

Example

The stamen of a sunflower is adnate to its petals.

The petals of a rose flower fuse together forming a sympetalous condition.

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Frequently Asked Questions

When the petals of a flower are not fused, that is, they are free, it is referred to as a polypetalous flower.

When an anther is attached to the whole length of its filament, it is called an adnate anther.

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