Question

check your progress 4.1 match the structure with its correct function. pedal disc a. thin, vertical wall that divides body and provides increased surface area for digestion acortia b. extensions around mouth for defense and capture of prey tentacles c. thread - like filaments that may be extended through the mouth to aid in capture of prey and defense primary septum d. pore that permits circulation of fluid between chambers ostium e. tough, fleshy base for attachment exercise 8 - 4 comb jellies (phylum ctenophora) materials needed - preserved comb jellyfish (pleurobrachia or other species) - latex gloves - dissecting microscope - small finger bowl the phylum ctenophora contains approximately 100 described species of small, marine invertebrates with transparent, bioluminescent, gelatinous bodies commonly referred to as “comb jellies,” “sea walnuts,” or simply ctenophores. their phylum name is derived from the unique distinguishing characteristic that all members of the phylum possess - eight rows of evenly spaced ciliated bands (comb plates) that encircle the body longitudinally (fig. 8.18). ctenophores propel themselves through the water by synchronized, wavelike beat of cilia on these comb plates. members of most species possess either a pair of tentacles or oral lobes that are used to collect food; however, ctenophores lack the stinging cnidocytes characteristic of cnidarians. instead, these carnivorous predators capture prey by discharging a sticky adhesive from specialized cells that are activated on physical contact, draw their victims into their mouths, and swallow them whole. amazingly, some species of ctenophores feed on small cnidarians can collect undischarged cnidocytes from their prey and incorporate these cells into their own epidermal tissue as a defense mechanism! 8.18 comb jellies (phylum ctenophora) are thought to be a sister taxon to cnidarians; they have transparent bodies with comb bands of cilia and bioluminescent properties.

Explanation:

The problem is about matching biological structures of ctenophores with their functions. Knowledge of zoology (a sub - field of biology) is required to make these matches.
pedal disc: e. Tough, fleshy base for attachment
acortia: No correct match provided in the given options as it is not clearly defined in the provided functions
tentacles: b. Extensions around mouth for defense and capture of prey
primary septum: a. Thin, vertical wall that divides body and provides increased surface area for digestion
ostium: d. Pore that permits circulation of fluid between chambers

Answer:

pedal disc - e. Tough, fleshy base for attachment
tentacles - b. Extensions around mouth for defense and capture of prey
primary septum - a. Thin, vertical wall that divides body and provides increased surface area for digestion
ostium - d. Pore that permits circulation of fluid between chambers