Parenchymatous | Siphoneous | Filamentous | Holdfast

Parenchyma, in plants, tissue typically composed of living cells that are thin-walled, unspecialized in structure, and therefore adaptable, with differentiation, to various functions. Siphonaceous (siphoneous) Applied to algae in which the thallus is not divided up by septa, i.e. the many nuclei are not compartmentalized into cells. The typical siphónaceous alga has a large central vacuole surrounded by a layer of protoplasm, containing nuclei and chloroplasts, which lines the cell wall. Filamentous -thin in diameter; resembling a thread. synonyms: filamentlike, filiform, threadlike, thready thin. of relatively small extent from one surface to the opposite or in cross section. Algae and kelp are like the trees and shrubs of the aquatic world except for one important factor, THEY’RE NOT PLANTS! Kelp is in fact in the Kingdom Protista meaning that among other things it does not use roots to absorb nutrients nor does it have a vascular system to transport those nutrients to its various structures. The part of kelp most similar in appearance and location to the roots of plants is called the holdfast. This spaghetti like structure has a primary function of securing the organism to the sea floor; holding it “fast” in all but the most turbulent conditions. Because of the way kelp holdfasts are tangled and tasseled, they make the perfect protected place for young ocean animals to get their start in the world. If you were to find an uprooted holdfast floating at sea or on the beach you would be likely to spot more than a few species of animals. Everything from brittle stars to isopods to tube worms, tiny sea hares, kelp crabs and baby octopus can be found in these miniature nurseries. Scientists believe you could find over one hundred species in a single holdfast! Questions: The brown algae, Asteronema, is: A) Parenchymatous B) Siphonous C) Filamentous D) Unicellular What is the function of the holdfast in algae such as Sargassum? A) Allow the floatation of the algae B) Photosynthesis C) To anchor to the substrate D) Produce gametes #marineBiology #marinePlants #Seagrass #SeaGrass #SeaTurtles #Manatee #NikolaysGeneticsLessons #Botany #plantEvolution #Parenchymatous #Siphoneous #Filamentous #Holdfast #WhatIsAlgae #TypesOfAlgae #AlgaeForKids #WhatIsAlgaeForKids #algae #whatIsMacroalgae #whatIsMicroalgae #usesOfAlgae #howDoesAlgaeGrow #partsOfAlgae #cyanobacteria #cyanobacteriaUnderMicroscope #microscopicLifeInAPond #photosynthesis #heterocyst #blueGreenAlgae #Genetics