SMU BIOL 1402- Exam 2 Exam
Questions & Answers (Grade A+)
the transition from jawless fish to jawed fish is thought to have
happened as -
correct answer ✅pharyngeal arches which support the gills
evolved into jaws
flowers were a critical innovation for plants because -
correct answer ✅ALL OF THE ABOVE
- flowers guaranteed pollination by attracting pollinators
- plants could get away with making less pollen and invest the
energy saved in other processes
- flowers can form fruits which aid in seed dispersal
plants and fungi are prolific producers of secondary metabolites
which are thought to have arisen as -
correct answer ✅a mechanism for self-defense
which organism is considered a pivotal transitional fossil between
fish and tetrapods -
correct answer ✅T. roseae, the Tiktaalik
, SMU BIOL 1402- Exam 2 Exam
Questions & Answers (Grade A+)
tunicates are considered chordates because -
correct answer ✅larval tunicates possess a notochord, a hollow
dorsal nerve cord, pharyngeal slits and a postanal tail
which of the following organisms undergo ecdysis -
correct answer ✅lobsters and caenorhabditis elegans
spatiotemporal expression of Hox genes leads to production of -
correct answer ✅various Hox proteins that control body patterning
along the anteroposterior axis of animals
the colonization of land by plants, fungi, invertebrates and animals
all required critical innovations that had what major advantage -
correct answer ✅protection from dehydration when out of the
water
the exoskeleton in arthropods is made of a polysaccharide called -
correct answer ✅Chitin
the black bar in the phylogenetic tree below represents which
group of organisms -
correct answer ✅Protosomes
Questions & Answers (Grade A+)
the transition from jawless fish to jawed fish is thought to have
happened as -
correct answer ✅pharyngeal arches which support the gills
evolved into jaws
flowers were a critical innovation for plants because -
correct answer ✅ALL OF THE ABOVE
- flowers guaranteed pollination by attracting pollinators
- plants could get away with making less pollen and invest the
energy saved in other processes
- flowers can form fruits which aid in seed dispersal
plants and fungi are prolific producers of secondary metabolites
which are thought to have arisen as -
correct answer ✅a mechanism for self-defense
which organism is considered a pivotal transitional fossil between
fish and tetrapods -
correct answer ✅T. roseae, the Tiktaalik
, SMU BIOL 1402- Exam 2 Exam
Questions & Answers (Grade A+)
tunicates are considered chordates because -
correct answer ✅larval tunicates possess a notochord, a hollow
dorsal nerve cord, pharyngeal slits and a postanal tail
which of the following organisms undergo ecdysis -
correct answer ✅lobsters and caenorhabditis elegans
spatiotemporal expression of Hox genes leads to production of -
correct answer ✅various Hox proteins that control body patterning
along the anteroposterior axis of animals
the colonization of land by plants, fungi, invertebrates and animals
all required critical innovations that had what major advantage -
correct answer ✅protection from dehydration when out of the
water
the exoskeleton in arthropods is made of a polysaccharide called -
correct answer ✅Chitin
the black bar in the phylogenetic tree below represents which
group of organisms -
correct answer ✅Protosomes
