zoo202 At 12:00 10_06_2023 Questions 1) unique characteristics of chordates? 2)Define class myxini? 3) Characteristics of entropneuses? 4) write a note on Anurans? 5)Define claspers and it's function? MCQ'S 1)in aorn worms, pharyngeal slits are openings between the anterior region of the digestive tract, *called* *the pharynx.* 2) in entropneuses: food is digested as diverticular of the gut called *hepatic sacs* 3)in entropneusta nervous system lies at the base of the *ciliated epidermis* 4)All blood flowing anteriorly passes into a series of blood sinuses called the *glomerulus* at the base of the *proboscis* 5)The majority of the organs lie within a body cavity below the atrial cavity called a *epicardium* 6) Members of the subphylum cephalochordates are called *lancelets* 7)it was present in the bony armor of a group of fishes called *ostracoderm* 8) The atrium and ventricle are *partially divided* 9) Excretory structures in the kidney are called *nephrons* 10)the organisms belonging to the protochordata are generally know as the *lower chordates* 11)A group of ancient eel like animals the *conodonts* are known from Fossils that date back about 510 million years. 12) tongue attaches at the *anterior* margin of the jaw and folds back over the floor of the mouth. 13) largest group of living vertebrates *bony fishies* 14) Amphibians are *cold blooded* vertebrates which can hue on land in the water. 15) Atrium is partially divided in urodeles and *completely divided* in Anurans. 16)in salamanders *30 to 90%* of gas exchange occurs across the skin. 17) feeding through *cilia and mucus* pori statement ni yad sai sy.