TS EAMCET Zoology Unit 4: Animal Diversity-II: Phylum Chordata — practice questions
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Practice TS EAMCET Zoology Unit 4: Animal Diversity-II: Phylum Chordata in the app →Which structure is present in every chordate at some stage of life?In chordates, the central nervous system is best described asWhere is the heart located in chordates compared with non-chordates?Which feature is absent in non-chordates but present in chordates?Urochordata and Cephalochordata are together often calledIn Urochordata, the notochord is found only in theIn Cephalochordata, the notochord extendsWhich of these is a member of subphylum Cephalochordata?Which animal is a urochordate (tunicate)?The notochord of vertebrates is replaced in the adult byWhich statement about vertebrates and chordates is correct?Vertebrates have a ventral muscular heart with how many chambers?The paired appendages of vertebrates may beVertebrates use which organs for excretion and osmoregulation?Division Agnatha of vertebrates is characterised by lackingWhich class is the only living jawless class in the NCERT scheme?How many pairs of gill slits do cyclostomes have?Which feature is true of cyclostomes?Petromyzon is commonly calledWhere do cyclostomes spawn, and what happens to the adults?Which fishes have a cartilaginous endoskeleton?The skin of cartilaginous fishes bears minuteWhy must many cartilaginous fishes swim constantly?The gill slits of Chondrichthyes areThe notochord in Chondrichthyes isWhere is the mouth located in cartilaginous fishes?How many chambers does the heart of a shark have?Which cartilaginous fish has electric organs?Claspers on the pelvic fins of males occur inCartilaginous fishes are poikilothermous, which means theyFertilisation in sharks isThe sting ray belongs to the genusThe gills of a bony fish are covered on each side byWhat does the air bladder of a bony fish regulate?Bony fishes mostly show which type of fertilisation?Which pair are both freshwater bony fishes?The flying fish Exocoetus belongs toBetta and Pterophyllum are examples ofThe word Amphibia (Gr. amphi, bios) meansThe skin of an amphibian isIn a frog, the ear is represented by theThe common chamber into which gut and urinogenital tracts open is theAmphibians breathe throughDevelopment in amphibians is described asWhich animal is a limbless amphibian?The name Reptilia refers to the animals'The body of a reptile is covered byThe heart of most reptiles has how many chambers?Which group lists only poisonous snakes?What is the defining feature of class Aves?Which bird is flightless?In birds the forelimbs are modified intoThe only skin gland of birds is theThe long bones of birds areThe extra chambers of the bird digestive tract areBirds are homoiothermous, meaning theyBirds supplement lung respiration withAptenodytes is the genus of theThe most unique feature of Mammalia is the presence ofThe skin of mammals is unique in possessingThe external ear flaps of mammals are calledWhich animal is an egg-laying mammal?Mammals are mostlyRespiration in mammals takes place byPteropus, the flying fox, is aWhich of these is the genus of the common dolphin?Which vertebrate class has a completely four-chambered heart and feathers?A two-chambered heart with one auricle and one ventricle occurs inTetrapoda includes vertebrates that bearWhich feature of chordates develops into the spinal cord?In vertebrates, the front end of the neural tube formsThe endostyle in chordates is a groove in the ventral wall of theThe endostyle may be a precursor of the vertebrateIn tetrapods, pharyngeal slits are present onlyChordates are deuterostomes, so during development theWhich cephalochordate habit is correct?Sea squirts as adults areSalps differ from sea squirts in that theyUrochordata gets its name from Greek oura meaningWhich term is now more commonly used for Urochordata?Which chordates are collectively called craniates?Hagfish and lampreys are grouped together in the cladeThe name Chordata is attributed toWhich animals lack a notochord?