Choose the one most appropriate letter for each blank. birds bony fishes caccili
ID: 91898 • Letter: C
Question
Choose the one most appropriate letter for each blank. birds bony fishes caccilians humans lampreys Iancelets opossum ostracoderms placoderms platypus salamanders sharks tunicates A. cartilaginous skeleton: jaws B. jawless fishes: now extinet C. placental mammal D. placental mammal D. legless amphibian E. invertebrate chordate: no metamorphosis F. endotherm with feathers G. limbless reptile H. most primitive fishes with jaws I. modern-day parasitic agnathan J. marsupial K. adult is called "sea squirt" I. egg-laying mammal M. swim bladder for buoyancy N. may be sexually mature in larval form Which of the following statements is NOT true? a. All chordates have a notochord b. All chordates have pharyngcal pouches or gillslits. c. All chordates have a dorsal nerve cord. d. All chordates are vertebrates e. Chordates are found in all major types of environments The only chordate feature still present in the adult is a. pharngeal gill slits b. a dorsal nerve cord c. a notochord d. a tail e. all of these All fishes, amphilians, reptiles, birds, and alive today a. have jaws b. are chordates c. are vertebrates d are craniates e are chordates and craniates. The first jaws were derived from which of the following? a. support structures in the gills b. hard bony plates in the month c. teeth d. ingested vertebrates e. amphibian mutants Vertebrate colonization of terrestrial habitats increased dramatically with the evolution of a. lungs b. paired appendages. c. shelled eggs. d. the four-chambered heart e. scales ALL EXCEPT which of the following have cartilaginous skeletons? a. sharks b. lampreys c. perch d. rays e. skates The notochord is most closely associated with the a. nervous system b. spinal cord c. skeletal system d. skin system e. muscle systemExplanation / Answer
70. F- Endotherm with feathers- Birds
71. M. Swim bladder for buoyancy- Bony fishes
72. D. Legless Amphibian - Caccilians
73. C. Placental Mammal - Humans
74. I. Modern-day Parasite agnathan- Lampreys
75. E. Invertebrate chordate, no metamorphosis Lancelets
76. J. Marsupial- Opossum
77. B. Jawless fish now extinct- Ostracoderms
78. H. Most primitive fishes with jaws- Placoderms
79. L-Egg laying Mammal- Platypus
80. N. may be sexually mature in Larval form Salamanders
81. A. Cartilagenous skeleton and jaws- Sharks
82. G-Legless reptile - Snakes
83. K-Adult is called ‘Sea squirt’- Tunicates
84- Answer –Option D
Explanation:- The Chordata is the animal phylum possessing notochord, a dorsal hollow nerve cord, pharyngeal slits and post anal tail. Vertebrates have one more characteristic that is a vertebral column. Vertebrates are a subphylum of chordates whose notochords are surrounded vertebrae ie; protected with spinal cord. Therefore, all vertebrates are chordates but, not all chordates are vertebrates.
85- Answer –Option B.
Explanation:- The dorsal nerve cord, modified in vertebrates into the central nervous system which is composed of the brain and spinal cord is the only chordate characteristic present in humans.
86- Answer-Option B.
Explanation:- The Phylum Chordata includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals). Craniata is a taxon in the phylum chordata. The vertebrates and hagfishes together comprise the taxon Craniata.
87- Answer-Option B.
Explanation:- Jaws evolved from the bony plates that placoderms used to sheer flesh
88- Answer –Option B.
Explanation:- Terrestrial locomotion has evolved as animals adapted from aquatic to terrestrial environments. The terrestrial habitat evolved dramatically due to terrestrial locomotion, which in turn evolved due to pair of appendages.
89- Answer-Option C.
Explanation:- Perch has a skeleton of bone, hence it is a bony fish and not cartilaginous.
90- Answer-Option B.
Explanation:- Vertebrates are a subphylum of chordates whose notochords are surrounded vertebrae ie; protected with spinal cord. Thus notochord is associated with spinal cord.