Involucrum
1. (Science: botany) see involucre.
2. (Science: zoology) a sheath which surrounds the base of the lasso cells in the siphonophora.
Origin: L. See involucre.
Dictionary > Involucrum
You will also like...
![Freshwater lake ecosystem](https://www.biologyonline.com/wp-content/uploads/2020/02/Freshwater-Producers-and-Consumers-238x168.jpg)
Freshwater Producers and Consumers
Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..
![Plant meristem](https://www.biologyonline.com/wp-content/uploads/2020/02/Plant-Meristems-and-Growth-253x168.jpg)
Plant Meristems and Growth
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..
![Electromagnetic spectrum of a brain](https://www.biologyonline.com/wp-content/uploads/2020/02/Sleep-and-Dreams-Neurology-243x168.jpg)
Sleep and Dreams – Neurology
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..
![Pink Lotus plant on a pond](https://www.biologyonline.com/wp-content/uploads/2020/02/Freshwater-Lentic-Communities-Animals-252x168.jpg)
Freshwater Lentic Communities & Animals
This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
![Control of body movement](https://www.biologyonline.com/wp-content/uploads/2020/02/Control-of-body-movement-168x168.jpg)
Control of Body Movement
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
![An artist's depiction of the origin of amphibians](https://www.biologyonline.com/wp-content/uploads/2020/02/Amphibians-Early-Reptiles-297x168.jpg)
Amphibians & Early Reptiles
Obtaining air outside an aquatic environment required species to acquire suitable adaptations, and this was the case of ..