Chondrichthyes - Guides d'étude, Notes de cours & Résumés

Hox genes - control the expression of genes that influence animal morphology (sponges are simple animals that do not have Hox genes) acoelmates - triploblastic animals without a coelom, their bodies are solid and have no cavity. Ancestors of animals... - diverged from ancient fungi, between 675 million and 800 million years ago, believed to be a suspension feeder similar to Choanoflagellates Animals are.. - -multicellular (without cell walls) -heterotropic -develop from embryonic layers ...

All chordates must have these structures at some time in their development correct answers notochord, dorsal tubular nerve cord, pharyngeal pouches or slits, and post-anal tail notochord correct answers a stiff, but flexible rod of connective tissue extending lengthwise and dorsal to the digestive tract; is an axis for muscle attachment; in higher vertebrates it is converted in the adult to the vertebral column dorsal tubular nerve cor correct answers anterior end becomes brain, the rest i...

WSU Biology 106 Exam 3 QUESTIONS AND CORRECT DETAILED ANSWERS WITH RATIONALES |ALREADY GRADED A+ Arthropods - ANSWER- Phyla with greatest amount of diversity with 85% of animal spp 700 million years ago - ANSWER- When the first animals originated Porifera (sponges) - ANSWER- Phyla with no tissues, muscles, nerves, or specialized organs Choanocytes - ANSWER- Flow of water and food acquisition in sponges Amoebocytes - ANSWER- Found in sponges, these cells are mobile and perform numer...

All chordates must have these structures at some time in their development correct answers notochord, dorsal tubular nerve cord, pharyngeal pouches or slits, and post-anal tail notochord correct answers a stiff, but flexible rod of connective tissue extending lengthwise and dorsal to the digestive tract; is an axis for muscle attachment; in higher vertebrates it is converted in the adult to the vertebral column dorsal tubular nerve cor correct answers anterior end becomes brain, the rest i...

The _____ of a fish removes oxygen from the water and forces it through its gills - Respiratory System _______ conveys sensation impulses to a fish's brain. - Nervous System ________ breaks down the food a fish consumes. - Digestive System The ________ consists of intestines and kidneys and it filters waste from the blood. - Excretory System The _______ is a lateral line for balance. - Sensory System The _______ consists of testes, ovaries, produces sperm and egg for the next generation....

The advantage of yeast cells over bacterial cells to express human proteins is that: -CORRECT ANSWER-- yeast cells are eukaryotic and modify proteins similarly to human cells Which of the following is a change that might have facilitated the move of aquatic plants onto land? a) desire for protection from herbivory b) protection from desiccation c) ability to survive with lower [CO2] d) adaptation to seasons e) ability to grow tall -CORRECT ANSWER-- ability to survive with lower CO2 Br...

The United States has a total of ___ million pet animals - 356 What is the most common companion animal? - 139 million fresh-water fish What is the order of popularity for companion animal species? - 1. Freshwater fish (139 million) 13% of homes 2. Cats (90 million) 34% of homes 3. Dogs (73 million) 40% of homes 4. Small animals (18 million) 5% of homes 5. Birds (16 million) 6% of homes 6. Reptiles (11 million) 4% of homes 7. Marine fish (9 million) .7% of homes 8. Horses (5.2...

CVA Exam 1 (2022 Answered) Graded A+ 5 chordate synapomorphies 1. pharyngeal wall with bilaterally symmetrical pharyngeal pouches and pharyngeal slits 2. Mid-dorsal hollow nerve cord (in humans:spinal cord) 3. a single, mid-dorsal supportive rod, the notochord (in humans:intervertebral discs) 4. a muscular postanal tail at some stage in life (in human: coccyx) 5. endostyle (precursor to thyroid) or thyroid gland characters found in some inverts or absent in some chordates 1. segmented ...

Tunicates (sea squirts) belong to the subphylum: a. Chordata b. Mammalia c. Craniata d. Urochordata e. Cephalochordata D) Tunicates belong to the subphylum Urochordata Lymphatic vessels are very similar in form and function to which of the following? a. Arteries b. Capillaries c. Veins d. Bowman's Capsules e. Bronchioles C) Lymphatic vessels are very similar in form and function to veins Which of the following cell types is responsible for rapidly initiating a secondary immune res...

Class of Bony Fish - ANSWER Osteichthyes Class of cartilaginous fish - ANSWER Chondrichthyes Class of Hagfish - ANSWER Myxini Class of Lampreys - ANSWER Cephalaspidomorphi Extinct armored fish - ANSWER Placoderms Phylum of all fish - ANSWER Chordata Subphylum of all fish - ANSWER Vertebrata Sea lamprey - ANSWER During the 1950's, Great Lakes Fisheries were devastated by this invasive parasite Ray - ANSWER Cartilaginous fish with triangular-shaped body, prominant dorsal f...