Are the following statments True or false
16) Cladistics recognizes only groups of organisms that arerelated by distant descent.
17) The fossil record is no longer useful in modern biology,because DNA sequencing and molecular clocks provide the sameinformation much more accurately.
18) Vertebrates are members of the phylum Chordata, a group ofanimals whose other membersï¾tunicates and lanceletsï¾are quitedifferent from most modern vertebrates, being small, marine, andsluggish or entirely sessile as adults.
19) Specialization of feeding mechanisms is a key feature of theevolution of the Actinopterygii and Sarcopterygii.
20) Fossil evidence indicates that vertebrates evolved in afreshwater environment and had appeared by the Early Cambrian.
21) The early radiation of jawed fishes, first known in detailfrom the fossil record in the Late Silurian, included four majorgroups. Two groups, the chondrichthyans and osteichthyans survivetoday.
22) In fishes with swim bladders, the rete mirabile moves gasespecially oxygen from the blood to the gas bladder.
23) A swimming fish experiences drag of two forms: viscous dragfrom friction between the fishâs body and water, and inertial dragfrom pressure differences created by the fishâs blood.
24) Chordates are distinguished from other organisms by thepresence of a notochord, a ventral solid nerve chord, a muscularpostanal tail, and an endostyle.
25) A pattern of fragmentationâcoalescenceâfragmentation hasresulted in the isolation and renewed contact of major groups ofvertebrates on a worldwide scale.
Are the following statments True or false
16) Cladistics recognizes only groups of organisms that arerelated by distant descent.
17) The fossil record is no longer useful in modern biology,because DNA sequencing and molecular clocks provide the sameinformation much more accurately.
18) Vertebrates are members of the phylum Chordata, a group ofanimals whose other membersï¾tunicates and lanceletsï¾are quitedifferent from most modern vertebrates, being small, marine, andsluggish or entirely sessile as adults.
19) Specialization of feeding mechanisms is a key feature of theevolution of the Actinopterygii and Sarcopterygii.
20) Fossil evidence indicates that vertebrates evolved in afreshwater environment and had appeared by the Early Cambrian.
21) The early radiation of jawed fishes, first known in detailfrom the fossil record in the Late Silurian, included four majorgroups. Two groups, the chondrichthyans and osteichthyans survivetoday.
22) In fishes with swim bladders, the rete mirabile moves gasespecially oxygen from the blood to the gas bladder.
23) A swimming fish experiences drag of two forms: viscous dragfrom friction between the fishâs body and water, and inertial dragfrom pressure differences created by the fishâs blood.
24) Chordates are distinguished from other organisms by thepresence of a notochord, a ventral solid nerve chord, a muscularpostanal tail, and an endostyle.
25) A pattern of fragmentationâcoalescenceâfragmentation hasresulted in the isolation and renewed contact of major groups ofvertebrates on a worldwide scale.
