What part of the earthworm's digestive system would you see in a cross-section anterior to the gizzard? the gut the sperm receptacles the crop the pharynx the oral cavity
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- Segmentation in the earthworm is not exemplified bya. body rings.b. coelom divided by septae.c. setae on most segments.d. nephridia interior in most segments.e. tympanum exterior to segments.What are some evolutionaryadvantages of animals withcomplete digestive tube?Flatworms digest food ___________ a. inside their cells c. in a gastrovascular cavity b. in a gizzard d. in a complete digestive tract
- The rhynchocoel is a. circulatory system fluid-filled cavity primitive excretory system proboscisDefine the advantage of a digestive system with two openings have relative to digestive systems with only a single opening (like that of the flatworms).Which earthworms have a clitellum?a). adultsb). juvenilesc). juvenile femalesd). malese). adult females
- What are the disadvantages of a flatworm’s digestive system having only one opening?Arthropods are distinguished by having an exoskeleton andlacking external cilia. How do these traits of the phylum affectthe breathing structures and ventilation modes of arthropods?Archaeocytes are associated witha. digestion in bacteria.b. the digestive tracts of sponges.c. the filter organs of continuous feeders.d. the human appendix.e. the ingestion and distribution of food in sponges.
- The pericardial cavity forms froma. evagination of the early digestive tract.b. the neural tube.c. the coelom.d. the branchial arches.e. pharyngeal pouches.What's different about digestion in sponges compared to digestion in Cnidarians? (Group of answer choices) A. Cnidarians have a complete digestive tract while sponges have an incomplete digestive tract B. sponges have a complete digestive tract while Cnidarians have an incomplete digestive tract C. Cnidarians have a cavity where food is digested, but sponges digest in each individual cell D. Sponges have a cavity where food is digested, but Cnidarians digest in each individual cellPhylum: Echinoderm, Class : Asteroidea 1. Ecology. Describe/answer the following for each organism:a. Does it have a complete or incomplete digestive system? How does this animal feed?b. Identify any unique feeding structure• Be sure to use the correct terms to identify any unique feeding structure(s) used by theanimal.
