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Rise of the Animals Exam Questions and Answers.
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Rise of the Animals Exam Questions and Answers.Rise of the Animals Exam Questions and Answers.Rise of the Animals Exam Questions and Answers.
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Rise of the Animals Exam Questions and Answers.major unifying, evolutionary relationships, key - Evolution is the ____ ______ theme in
biology, and the _______ ______ among organisms are _____ to appreciating
biodiversity.
Fossil embryos, larvae, 0.15-1.2mm, southwest China, 580 MYA - Oldest animals
discovered are ____ ____ and _____ that are _____ in diameter. They were found in
_______ and are dated at ______.
Relatives, living, controversial, developmental characteristics, - Interpretation of these
embryos as ________ of _____ forms is ________ because none of them display
______ ________ exactly like those of invertebrate larvae alive today.
Form, embryogenesis - Finding of larvae does suggest that these organisms went
through the same _____ of ______ that is still present in organisms today.
Education, 565-543 MYA - The oldest macroscopic fossil animals are the ______
organisms which range in age from ____
Vendobionts - Forms which appear unrelated to extant taxa are called:
They represent a group of animals unrelated to extant forms that died out completely,
they represent a stem group of extant taxa such as cnidarians - Education fossils are
poorly preserved and so their affinities to living or Cambrian groups are unclear. Two
hypotheses have been proposed:
Newfoundland, 575-560 MYA, quilted fronds, plumose structures, semi-rigid internal
structure, single clade, unrelated - The oldest example of education organisms was
found in _____ and date at _____. These fossils have the same _____ _____ and
_____ _____seen in organisms today and show evidence of a ______ _____ _____.
This evidence suggests that Education animals represent a _____ ____ that is probably
______ to any living animals.
543-519 MYA, small fossil shells, small shelly fossils, subtrilobtic, trilobites, 519 MYA,
dominant, 300 million - The early Cambrian (_____ date) is characterized by a layer of
____ _____ ____ called the ____ ____ ___. It is divided into two periods’ _____ and
_______. Trilobites appeared about _______ and were the ______ group of marine
arthropods for nearly ______ years.
Burgess Shale, Charles Doolittle Walcott, 505 MYA, related to extant groups, sponges,
cnidarians, bilaterians. extant groups. - The best know Cambrian fossil deposit is the
________. It was discovered by _______. Its age is about _______. Contains a huge
variety of animal forms. Some of these seem _____ _____ _____ such as ____,
______ and _______. However the majority of the animals do not clearly fall into ____
_____.
, problematica, uncertain affinities, extant phyla, phyla of their own - The Cambrian forms
have been referred to as ______ to reflect their ______ ______. Early researches
shoehorned many of the problematica into _____ _____. Other more recent researches
have placed theme into _____ _____ _____ _____.
15 million years, lower, middle, 26 MYA, Cambrian Explosion - The deposit all date from
a narrow window of only about _______ in the ____ and _______ Cambrian. Before this
large gap in the fossil record of about ______ to the Edicarian faunas of the
Precambrian. the sudden appearance of fossils led to the period being called the
______ _______.
problem, theory, evolution, rapid, gradual - Darwin saw the Cambrian as a _______ for
his ______ of ______ as it suggested _____ change rather than ______.
do not fit within extant phyla, and thus belonged to lineages that no longer exist.
Disparity of animals alive today s lee than it was in the Cambrian - Gould believes that
many of the Cambrian animals
1.
2. disparity
mostly represent branches off the lineages that led to extant groups of animals.
Disparity has gradually increased since animals first appeared. - Conway Morris believe
that he Cambrian animals
1.
2. disparity
comparative study of biological diversity both past and present
theory and practice of ordering diversity
evolutionary history of a lineage of organisms - Systematics is the:
Classification is the:
Phylogeny is the:
common ancestor and all of ts descendants, common ancestor and some of its
descendants, lacks its most recent common ancestor - Monophyletic group:
Paraphyletic group:
Polyphyletic group:
heritable, morphological, behavioral, molecular, evolve, modified, passed, descendants
- Characters must be ______ and can be _____, ______ or _______. As lineages
______ their characters may become _____ and may be ______ on to their _______.
Descent with modification - Darwin described evolution as:
plesiomorphies, ancestral, apomorphies, derived, derived, synapomorphies, shared,
autapomorphies, unique - Each taxon has two basic types of characters, ______ which
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