what is the initial result of a mass extinction on plant and animal diversity?
5) As you likely know, we are in the largest extinction event since the Cretaceous-Tertiary (K-T) mass extinction of 66 million years ago, in which 75% of all plant and animal species were eliminated. It is widely thought that the K-T mass extinction was associated with a ca. 10 km diameter meteor strike in the Gulf of Mexico near what is now the Yucatan peninsula. The on-going mass extinction event (the Holocene or (and this is my preferred term) Anthropocene...
7. After mass extinction events, evidence from the fossil record shows: O diversity, in terms of genera, increased to levels above what was present just before the previous extinction. O descendants of lineages surviving the extinction event gave rise to entirely new lineages of animals. O groups of organisms replace each extinct group with a new, more derived, descendant group. O new animal phyla evolved after each extinction event.
30. How are mass extinction events distinguished from background extinction rates? Which common environmental factor associated appears to be associated with all past and even current mass extinction events? What are some of the global consequences caused by this common environmental factor that lead to mass extinctions? 31. According to the traditional classification of vertebrates, class Reptilia is a paraphyletic group because it does not include all descendants of a common ancestor. Which group has been left out of the...
Up to 35% of over 1,000 animal and plant species in six regions are at risk of extinction from climate change O True O False
Fill in animal diversity 1 table BIOL 1107 Animal Diversity Name: Class Phylum Porifera Symmetry germ layers Body Cavity Digestion Nervous System Type of Reproduction Calcarea Porifera Hexactinellida Intricellular Porifera Demospongiae Cnidaria Hydrozoa Cnidaria Gastrovascular Cavity Scyphozoa Cnidaria Anthozoa Ctenophora Platyhelminthes Turbellaria Platyhelminthes Trematoda Sexual - hermaphroditic Platyhelminthes Cestoda Rotifera
What is the cause of the sixth mass extinction event experienced on earth? What is the cause of the sixth mass extinction event experienced on earth? Climate change Habitat loss due primarily due to agriculture Pollution Volcanoes erupted through a large coal deposit in what is now Siberia An very large astroid struck just off the Yucatan Penisula in what is now Mexico
Chapters 29,30 Plant Diversity I, Plant Dlversity I 1. What are characteristics of the most recent common ancestor land plants 2. List plant adaptations to lifo on land. 3. What are characteristics of Byophytes? 4. How are plant spores produced? 5. Define the function(s) of archegonia 6. Def fine heterospory in terms of the evolution of plants. 7. Discuss the ongoing trend in the evolution of land plants. 8, what is the function of the seed coat? 9. How are...
What is the probability of extinction for a species of rare bird with an initial population size of 118, b = 1.39, d = 1.31. What if there were only 20 birds to start?
Regarding the evolutionary history of biological diversity (cladogenesis and extinction), would you say biodiversity changes are typically rapid or slow? a) Gradual or punctuated? b) Give an example of each. c) In comparison to adaptive radiations per se, what additional process occurs with punctuated equilibrium? d) What are two hypotheses thought to explain stasis of organisms, particularly those that have not changed substantially over the last 100 million years?
What are the similarities and differences between animal and plant cells