The word "colloblast" is spelled with two "l's" to indicate the pronunciation of a double "l" sound. In IPA (International Phonetic Alphabet) transcription, this sound is represented by the symbol /l/. The "o" in "colloblast" is pronounced with a short, closed sound, represented by the symbol /ɒ/. The second "o" is pronounced with a long, open sound, represented by the symbol /oʊ/. The final "t" is pronounced with a crisp, unvoiced sound, represented by the symbol /t/. Overall, the word is pronounced kuh-luh-blast.
A colloblast is a specialized cell found in certain marine organisms, particularly in members of the phylum Ctenophora, commonly known as comb jellies. This unique cell is responsible for capturing prey in a distinctive and efficient manner. Colloblasts possess a long, thread-like structure called a colloblast filament, which consists of a sticky substance. When a colloblast filament comes into contact with a potential prey item, the sticky material adheres to it, immobilizing and entrapping the organism.
Furthermore, colloblasts are typically located along the outer surface of the comb jelly, often arranged in rows or groups. This strategic placement allows for effective prey capture throughout the organism's body. Once the colloblasts have successfully secured their prey, the captured organisms are then engulfed and digested by the comb jelly.
The evolutionary significance of colloblasts lies in their role as an adaptation for feeding. By utilizing these specialized cells, comb jellies have developed an efficient method of capturing and consuming prey, which aids in their survival and reproduction. The term "colloblast" is derived from the Greek words "kolle" meaning glue and "blast" meaning germ or cell, emphasizing the sticky nature and cellular origin of this unique structure.
Overall, colloblasts serve as critical components of the feeding apparatus of comb jellies, and their specialized function demonstrates the remarkable adaptations found in marine organisms to ensure successful prey capture and nutrient acquisition.
The word "colloblast" is derived from the Greek words "kolos" meaning "glue" and "blastos" meaning "bud" or "germ". The term was coined by the scientist Otto Maas in 1897 to describe the specialized adhesive cells found in certain marine invertebrates, particularly among ctenophores (comb jellies). Colloblasts are used to capture prey by releasing sticky threads or tendrils that stun or entangle the organisms they come into contact with.