Evolutionary biologists have coined the term exaptation to...

Name: Problem 9, Chapter 35: Campbell Biology
Uploaded: 2020-10-24T16:28:01-08:00
Duration: 2 min 27 s
Channel: Bryan Lynn
Description: Evolutionary biologists have coined the term exaptation to describe a common occurrence in the evolution of life: A limb or organ evolves in a particular context but over time takes on a new function (see Concept 23.4 ). What are some examples of exaptations in plant organs?

Evolutionary biologists have coined the term exaptation to describe a common occurrence in the evolution of life: A limb or organ evolves in a particular context but over time takes on a new function (see Concept 23.4 ). What are some examples of exaptations in plant organs?

Labs

Want to see this concept in action?

NEW

Explore this concept interactively to see how it behaves as you change inputs.

View Labs

Key Concepts

Exaptation

Exaptation refers to a process in evolution where a trait that originally evolved for one function is repurposed for a new use. This concept highlights that features developed under particular selective pressures can later be co-opted to serve different roles as organisms adapt to changing environments or exploit new ecological niches.

Plant Organ Evolution

Plant organs such as leaves, stems, and roots, while initially adapting to specific functions like photosynthesis, support, or nutrient uptake, can undergo modifications over time that allow them to perform additional or entirely new functions. This evolutionary flexibility underpins the diversity of forms and utilities observed in plant structures.

Functional Innovation

Functional innovation in evolution occurs when existing structures acquire new roles that enhance an organism's survival or reproduction. In plants, for example, organs that were developed for one primary function may be adapted for defensive mechanisms, reproductive strategies, or other ecological benefits, demonstrating the dynamic nature of evolutionary change.

Transcript

Please give Ace some feedback