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1.How is morphology related to food collection in protobranch and lamellibranch subclasses of bivalves?
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- Which of the following is not true of Acanthostega? It was aquatic It had gills It had four limbs It laid shelled eggs.Topic: Earthworms 1. What is the function of the setae? 2. What is the function of the openings at segment number 14?Class Gastropoda and Class Bivalvia independently evolved modifications to their body plan that allowed them to invade sandy and muddy habitats, burying their bodies under the surface and accessing the surface via siphons. For an example organism in each Class, (1) draw a diagram showing the morphological modifications and (2) write a description of how this organism had evolved from the hypothetical ancestral mollusk (HAM) body plan.
- Class Cephalopoda is unique among the classes in Phylum Mollusca in that (they undergo direct development/ they have an open circulatory system/ they have a closed circulatory system)?Describe and contrast the tegument of most turbellarians and the other classes of platyhelminths. Does the tegument provide evidence that trematodes, monogeneans, and cestodes form a clade within Platyhelminthes? Why?A) State the function of the following external parts of the genus Cambarus (Class Crustacea): walking legs: opening of sperm duct: gills: excretory pore: abdomen: eyes What are the hairlike appendages called that anchor into the skin of annelids? What structures do earthworms have to help dispose of nitrogenous wastes? Briefly describe how earthworms reproduce and what structures are involved.
- Give two specific anatomical features of free-living and parasitic flatworms and relate it to their mode of living. Anatomical features Free-living Parasitic 1. 2.1)What is the best synapomorphy for Phylum Mollusca? 2) What is a synanthropic arthropod? Provide an example. Please answer asap and in short and content should not be palgarised pleaseWhich of the following features does not distinguish humans as a member of phylum Chordata? Human embryos undergo indeterminate cleavage A spinal cord runs along an adult human’s dorsal side Human embryos exhibit pharyngeal arches and gill slits, The human coccyx forms from an embryonic tail.
- Members of Chondrichfhyes are thought to be descended from fishes that had. a cartilaginous skeleton a bony skeleton mucus glands slime glandsDescribe and contrast the tegument of most turbellarians and the other classes ofPlatyhelminthes. Does the tegument provide evidence that trematodes,monogeneans, and cestodes form a clade within Platyhelminthes? Why?If the lateral cilia of pterobranch tentacles are inactivated what would be the likely consequence? Group of answer choices